On 2014/07/02 an investor bought a bond with face value of $1000 and expiration of 2020/07/01. The coupon rate is 4% and the bond pays semi-annual coupons. On the day the bond was purchased investors' required YTM on bonds with similar riskiness was 3.5%. The investor sold the bond two years later, on 2016/07/02, by which time the yield-to maturity decreased to 2%. The investors was able to reinvest coupons received during the holding period at 5%. What was the investor's realized annual yield?