The table below displays the Consumer Price Index (CPI) for a country over a three-year period.
| Year | Consumer Price Index (CPI) |
|---|---|
| Year 1 | 106.4 |
| Year 2 | 112.5 |
| Year 3 | 115.0 |
What is the annual rate of inflation in Year 2?
5.4%5.4\%5.4%
5.7%5.7\%5.7%
6.1%6.1\%6.1%
12.5%12.5\%12.5%