Refer the table below:

Maturity Coupon Bid Price Asked Price Asked Yield, %

2012 May 15 1.375 101:05 101:06 0.78

2013 May 15 3.625 106:31 107:01 1.23

2014 May 15 4.75 111:22 111:23 1.70

2020 May 15 8.75 144:17 144:19 3.44

2025 Aug 15 6.875 133:07 133:11 3.94

2030 May 15 6.25 128:25 128:27 4.12

2040 May 15 4.375 100:28 100:29 4.32

What is the current yield of the 4.375% 2040 maturity bond?