The following return series comes from Global Financial Data. US T-bills Year 2016 Large Stocks LT Gov Bonds (Rf asset) CPI (inflation) 12.95% 2.35% 0.20% 1.90% 2017 18.63% 5.75% 0.60% 1.80% 2018 -5.28% -1.25% 0.80% 2.10% 2019 25.45% 3.35% 1.20% 1.10% 2020 19.12% 9.30% 1.50% 2.10% Calculate the average rate of inflation. (Enter percentages as decimals and round to 4 decimals)