# \$100 in 1931 is worth \$2,372 in 1991

\$

## Value of \$100 from 1931 to 1991

According to the Bureau of Statistics consumer price index, prices in 1991 are 2,272.00% higher than average prices since 1931. The Australian dollar experienced an average inflation rate of 5.42% per year during this period, causing the real value of a dollar to decrease.

In other words, \$100 in 1931 is equivalent in purchasing power to about \$2,372 in 1991, a difference of \$2,272.00 over 60 years.

The 1931 inflation rate was -7.41%. The inflation rate in 1991 was 3.13%. The 1991 inflation rate is higher compared to the average inflation rate of 2.37% per year between 1991 and 2020.

 Cumulative price change 2,272.00% Average inflation rate 5.42% Converted amount (\$100 base) \$2,372 Price difference (\$100 base) \$2,272.00 CPI in 1931 2.500 CPI in 1991 59.300 Inflation in 1931 -7.41% Inflation in 1991 3.13%

AUD Inflation since 1922
Annual Rate, the Bureau of Statistics CPI

## Buying power of \$100 in 1931

This chart shows a calculation of buying power equivalence for \$100 in 1931 (price index tracking began in 1922).

For example, if you started with \$100, you would need to end with \$2,372 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When \$100 is equivalent to \$2,372 over time, that means that the "real value" of a single Australian dollar decreases over time. In other words, a dollar will pay for fewer items at the store.

This effect explains how inflation erodes the value of a dollar over time. By calculating the value in 1931 dollars, the chart below shows how \$100 is worth less over 60 years.

According to the Bureau of Statistics, each of these AUD amounts below is equal in terms of what it could buy at the time:

Dollar inflation: 1931-1991
Year Dollar Value Inflation Rate
1931 \$100.00 -7.41%
1932 \$96.00 -4.00%
1933 \$92.00 -4.17%
1934 \$92.00 0.00%
1935 \$96.00 4.35%
1936 \$96.00 0.00%
1937 \$100.00 4.17%
1938 \$104.00 4.00%
1939 \$104.00 0.00%
1940 \$108.00 3.85%
1941 \$112.00 3.70%
1942 \$124.00 10.71%
1943 \$128.00 3.23%
1944 \$128.00 0.00%
1945 \$128.00 0.00%
1946 \$128.00 0.00%
1947 \$136.00 6.25%
1948 \$148.00 8.82%
1949 \$160.00 8.11%
1950 \$176.00 10.00%
1951 \$208.00 18.18%
1952 \$244.00 17.31%
1953 \$256.00 4.92%
1954 \$260.00 1.56%
1955 \$264.00 1.54%
1956 \$280.00 6.06%
1957 \$288.00 2.86%
1958 \$288.00 0.00%
1959 \$296.00 2.78%
1960 \$308.00 4.05%
1961 \$312.00 1.30%
1962 \$312.00 0.00%
1963 \$316.00 1.28%
1964 \$324.00 2.53%
1965 \$336.00 3.70%
1966 \$344.00 2.38%
1967 \$356.00 3.49%
1968 \$368.00 3.37%
1969 \$380.00 3.26%
1970 \$392.00 3.16%
1971 \$416.00 6.12%
1972 \$440.00 5.77%
1973 \$480.00 9.09%
1974 \$556.00 15.83%
1975 \$640.00 15.11%
1976 \$724.00 13.13%
1977 \$812.00 12.15%
1978 \$876.00 7.88%
1979 \$956.00 9.13%
1980 \$1,056.00 10.46%
1981 \$1,156.00 9.47%
1982 \$1,284.00 11.07%
1983 \$1,416.00 10.28%
1984 \$1,472.00 3.95%
1985 \$1,568.00 6.52%
1986 \$1,712.00 9.18%
1987 \$1,856.00 8.41%
1988 \$1,992.00 7.33%
1989 \$2,140.00 7.43%
1990 \$2,300.00 7.48%
1991 \$2,372.00 3.13%
1992 \$2,396.00 1.01%
1993 \$2,436.00 1.67%
1994 \$2,484.00 1.97%
1995 \$2,600.00 4.67%
1996 \$2,668.00 2.62%
1997 \$2,676.00 0.30%
1998 \$2,696.00 0.75%
1999 \$2,736.00 1.48%
2000 \$2,860.00 4.53%
2001 \$2,984.00 4.34%
2002 \$3,076.00 3.08%
2003 \$3,160.00 2.73%
2004 \$3,232.00 2.28%
2005 \$3,320.00 2.72%
2006 \$3,436.00 3.49%
2007 \$3,516.00 2.33%
2008 \$3,672.00 4.44%
2009 \$3,736.00 1.74%
2010 \$3,844.00 2.89%
2011 \$3,972.00 3.33%
2012 \$4,040.00 1.71%
2013 \$4,140.00 2.48%
2014 \$4,244.00 2.51%
2015 \$4,308.00 1.51%
2016 \$4,364.00 1.30%
2017 \$4,448.00 1.92%
2018 \$4,504.00 1.26%
2019 \$4,589.58 1.90%
2020 \$4,676.78 1.90%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 54 more rows

This conversion table shows various other 1931 amounts in 1991 dollars, based on the 2,272.00% change in prices:

Conversion Table: Value of a dollar in 1991
Initial value Equivalent value
\$1 dollar in 1931 \$23.72 dollars in 1991
\$5 dollars in 1931 \$118.60 dollars in 1991
\$10 dollars in 1931 \$237.20 dollars in 1991
\$50 dollars in 1931 \$1,186.00 dollars in 1991
\$100 dollars in 1931 \$2,372.00 dollars in 1991
\$500 dollars in 1931 \$11,860.00 dollars in 1991
\$1,000 dollars in 1931 \$23,720.00 dollars in 1991
\$5,000 dollars in 1931 \$118,600.00 dollars in 1991
\$10,000 dollars in 1931 \$237,200.00 dollars in 1991
\$50,000 dollars in 1931 \$1,186,000.00 dollars in 1991
\$100,000 dollars in 1931 \$2,372,000.00 dollars in 1991
\$500,000 dollars in 1931 \$11,860,000.00 dollars in 1991
\$1,000,000 dollars in 1931 \$23,720,000.00 dollars in 1991

## How to Calculate Inflation Rate for \$100, 1931 to 1991

Our calculations use the following inflation rate formula to calculate the change in value between 1931 and 1991:

CPI in 1991 CPI in 1931
×
1931 AUD value
=
1991 AUD value

Then plug in historical CPI values. The Australian CPI was 2.5 in the year 1931 and 59.3 in 1991:

59.32.5
×
\$100
=
\$2,372

\$100 in 1931 has the same "purchasing power" or "buying power" as \$2,372 in 1991.

To get the total inflation rate for the 60 years between 1931 and 1991, we use the following formula:

CPI in 1991 - CPI in 1931CPI in 1931
×
100
=
Cumulative inflation rate (60 years)

Plugging in the values to this equation, we get:

59.3 - 2.52.5
×
100
=
2,272%

Politics and news often influence economic performance. Here's what was happening at the time:

• The Empire State Building opens in New York.
• A railway explosion is faked by the Japanese in order to create a pretext for their Manchuria invasion.
• Proclamation of the Chinese People's Republic by Mao Zedong.

## Data Source & Citation

Raw data for these calculations comes from the government of Australia's annual (CPI) as provided by the Reserve Bank of Australia. The consumer price index was established in 1922 and is tracked by Australian Bureau of Statistics (ABS).

You may use the following MLA citation for this page: “1931 dollars in 1991 | Australia Inflation Calculator.” Official Inflation Data, Alioth Finance, 28 May. 2020, https://www.officialdata.org/1931-AUD-in-1991.

in2013dollars.com is a reference website maintained by the Official Data Foundation.

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

 Cumulative price change 2,272.00% Average inflation rate 5.42% Converted amount (\$100 base) \$2,372 Price difference (\$100 base) \$2,272.00 CPI in 1931 2.500 CPI in 1991 59.300 Inflation in 1931 -7.41% Inflation in 1991 3.13%