Final answer:
The highest inflation rate from January 1960 to the present occurred in the 1970s in the United States, where annual rates reached double digits.
Step-by-step explanation:
The highest inflation rate in the United States from January 1960 to present was experienced in the 1970s. This era is noted for its high inflation rates. During the twentieth century, several periods had significant inflation spikes, particularly after World Wars I and II.
However, the highest annual inflation rates occurred in the 1970s, where prices rose to double-digit rates. In comparison, the last two decades have witnessed relatively low inflation rates, with the Consumer Price Index (CPI) typically rising between 2% to 4% per year.