According to the U.S. Bureau of Labor Statistics, prices for medicinal drugs were 0.11% lower in 2019 versus 2018 (a $0.02 difference in value).

**Between 2018 and 2019:** Medicinal drugs experienced an average inflation rate of -0.11% per year.
In other words, medicinal drugs costing $20 in the year 2018 would cost $19.98 in 2019 for an equivalent purchase.
Compared to the overall inflation rate of 1.81% during this same period, inflation for medicinal drugs was
lower.

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

Year |
2018 | 2019 |

CPI |
124.905 | 124.772 |

Milk · Wireless telephone services · Housing · Jewelry ·

Below are calculations of equivalent buying power for Medicinal drugs, 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 | $19.98 | -0.11%* |

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

Then plug in historical CPI values from above. The CPI for Medicinal drugs was 124.905 in the year 2018 and 124.772 in 2019:

124.772 / 124.905 * $20 =

Therefore, according to U.S. Bureau of Labor Statistics, $20 in 2018 has the same "purchasing power" as $19.98 in 2019 (in the CPI category of Medicinal drugs).