what is the average return of security 1 in percentage form. Please show work

6.28 0.47 date Market RF Risk free 199501 0.42 199502 0.4 199503 2.18 0.46 199504 2.11 0.44 199505 2.9 0.54 199506 2.72 199507 3.72 0.45 199508 0.55 0.47 199509 3.35 0.43 199510 -1.52 0.47 199511 3.95 0.42 199512 1.03 0.49 199601 2.26 0.43 199602 1.33 0.39 199603 0.73 0.39 199604 2.06 0.46 199605 2.36 0.42 Security 1 Security 2 Security 3 1.67 4.59 -1.71 3.14 1.24 7.74 0.38 5.91 2.6 4.35 6.01 2.11 3.92 2.26 7.05 -0.92 10.45 5.8 -3.47 6.07 1.25 4.57 -0.09 -1.64 2.89 -7.42 2.79 5.29 4.91 2.93 1.05 -2.48 4.99 -3.31 0.2 1.82 4.46 3.18 6.25 4.37 -7.68 -0.68 10.32 -1.6 9.99 0.95 5.48 1.53