Compute the annual standard deviation of returns for all countries from 1980 – 1981 Year Month Australia Canada France Germany Italy 1980 7 -0.0026889 0.0546111 -0.0204165 0.0369633 0.1278857 1980 8 0.0407999 -0.0117627 0.0244608 -0.0230018 0.0696608 1980 9 0.060746 0.0135679 0.0113528 -0.0190223 0.1420983 1980 10 0.0585204 -0.0220067 0.0920545 -0.0205731 0.2766413 1980 11 -0.0175011 0.0490367 -0.0163204 -0.0030604 -0.0968726 1980 12 -0.030612 -0.074856 -0.0757283 -0.0210946 0.0017446 1981 1 -0.0965194 -0.0119725 -0.0590439 -0.034434 0.1904963 1981 2 -0.0241678 -0.0322855 0.0308526 -0.0096864 0.0908233 1981 3 0.0816266 0.0492637 0.0112111 0.0099601 0.0358859 1981 4 -0.0156632 -0.0168862 -0.0607607 0.0350148 0.1014527 1981 5 -0.0034859 0.0154803 -0.1894615 -0.0372021 0.0531986 1981 6 -0.0324157 -0.0358805 -0.0759704 0.0361752 -0.2164954 1981 7 -0.1098754 -0.05526 0.1138425 -0.0065494 -0.092925 1981 8 -0.0136848 -0.0340705 0.0249309 -0.0462012 0.1319221 1981 9 -0.1024419 -0.1480877 -0.0313814 -0.0480223 -0.1772388 1981 10 -0.0587205 -0.0334613 -0.0514094 -0.015371 -0.051872 1981 11 0.0683676 0.0768831 0.0250603 0.0186473 0.0455291 1981 12 -0.0010473 -0.0444019 -0.0153722 -0.0308835 -0.016512