What is the average return of security 1 in percentage form?

 

date Market RF Risk free Security 1 Security 2 Security 3 199501 1.8 0.42 1.67 4.59 -1.71 199502 3.63 0.4 3.14 -1.24 7.74 199503 2.18 0.46 0.38 5.91 6.28 199504 2.11 0.44 2.6 -4.35 6.01 199505 2.9 0.54 2.11 3.92 2.26 199506 2.72 0.47 7.05 -0.92 10.45 199507 3.72 0.45 5.8 -3.47 6.07 199508 0.55 0.47 1.25 4.57 -0.09 199509 3.35 0.43 -1.64 2.89 1.53 199510 -1.52 0.47 -7.42 2.79 5.29 199511 3.95 0.42 4.91 2.93 1.05 199512 1.03 0.49 -2.48 4.99 -3.31 199601 2.26 0.43 0.2 1.82 1.1 199602 1.33 0.39 4.46 3.18 6.25 199603 0.73 0.39 4.37 -7.68 -0.68 199604 2.06 0.46 10.32 -1.6 9.99 199605 2.36 0.42 0.95 5.48 3.07