According to the U.S. Bureau of Labor Statistics, prices for window coverings were 3.50% lower in 2019 versus 2018 (a $0.70 difference in value).

**Between 2018 and 2019:** Window coverings experienced an average inflation rate of -3.50% per year.
This rate of change indicates significant deflation.
In other words, window coverings costing $20 in the year 2018 would cost $19.30 in 2019 for an equivalent purchase.
Compared to the overall inflation rate of 1.70% during this same period, inflation for window coverings was
significantly lower.

Raw Consumer Price Index data from U.S. Bureau of Labor Statistics for *Window coverings*:

Year |
2018 | 2019 |

CPI |
64.152 | 61.906 |

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Below are calculations of equivalent buying power for Window coverings, over time, for $20 beginning in 2018. Each of the amounts below is equivalent in terms of what it could buy at the time:

Year | USD Value | Inflation Rate |
---|---|---|

2018 | $20.00 | - |

2019 | $19.30 | -3.50%* |

CPI in 2019 / CPI in 2018 * 2018 USD value = 2019 USD value

Then plug in historical CPI values from above. The CPI for Window coverings was 64.152 in the year 2018 and 61.906 in 2019:

61.906 / 64.152 * $20 =

Therefore, according to U.S. Bureau of Labor Statistics, $20 in 2018 has the same "purchasing power" as $19.30 in 2019 (in the CPI category of Window coverings).