class,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,avg
emg,59.9,11.4,74.8,-7.3,-5.2,6.0,-11.6,-25.3,66.4,-30.6,-2.4,-6.0,56.3,26.0,34.5,11.9
sg,51.2,7.8,13.4,-2.4,31.0,11.3,12.9,1.2,43.1,-22.4,-9.2,-30.3,48.5,14.3,4.2,9.2
mg,47.0,8.7,11.2,-2.2,34.0,17.5,22.5,17.9,51.3,-11.7,-20.2,-27.4,42.7,15.5,12.1,12.2
hy,46.2,15.7,17.1,-1.0,19.2,11.4,12.8,1.9,2.4,-5.9,5.3,-1.4,29.0,11.1,2.7,10.4 
sv,41.7,29.1,23.8,-1.5,25.7,21.4,31.8,-6.5,-1.5,22.8,14.0,-11.4,46.0,22.2,4.7,16.3
lg,38.4,5.1,1.7,3.1,38.1,24.0,36.5,42.2,28.2,-22.1,-12.7,-23.6,25.7,6.1,3.5,10.9
mv,37.9,21.7,15.6,-2.1,34.9,20.3,34.4,5.1,-0.1,19.2,2.3,-9.6,38.1,23.7,12.6,16.0
lv,22.6,10.5,18.6,-0.6,37.0,22.0,30.0,14.7,12.7,6.1,-11.7,-20.9,31.8,15.7,6.3,11.9
ig,16.0,7.4,9.7,-2.9,18.5,3.6,9.7,8.7,-0.8,11.6,8.4,10.3,4.1,4.3,2.4,7.3
intl,12.1,-12.2,32.6,7.8,11.2,6.0,1.8,20.0,27.0,-14.2,-21.4,-15.9,38.6,20.2,13.5,7.0
tbill,5.7,3.6,3.1,4.2,5.7,5.3,5.2,5.1,4.7,6.0,4.1,1.7,1.1,1.2,3.0,4.0
cpi,3.1,2.9,2.7,2.7,2.5,3.3,1.7,1.6,2.7,3.4,1.6,2.4,1.9,3.3,3.5,2.6