Assume that the Pure Expectation Theory determines interest rates in the markets. Today's market rates for different maturities are as follows: 1 year =3.5% 2 years =4.3% 3 years =6% 4 years =6.5% 5 years =7.2% What is the implied 2 year interest rate for investing in 3 years? Enter your answer as a percentage, without the percentage sign ('\%'), and rounded to 1 decimal. For example. if your answer is 7.2134%, just enter 7.2