Final answer:
The U.S. inflation rate since 2000 has typically been around 2% to 4%. The highest inflation occurred after World Wars I and II and in the 1970s. The lowest inflation was during the Great Depression of the 1930s.
Step-by-step explanation:
In the U.S. economy, the annual inflation rate in the last two decades has typically been around 2% to 4%. The periods of highest inflation in the United States in the twentieth century occurred during the years after World Wars I and II, and in the 1970s. The period of lowest inflation-actually, with deflation-was the Great Depression of the 1930s.