IAR +49.49% +71.95% +178.09% +49.95% +62.28% +24.81% +22.84% +21.02% +17.45% +12.27% ARET +131.93% +154.39% +260.53% +70.5% +82.83% +31.25% +29.28% +27.46% +23.89% +18.71% 2007 +4.87% +7.09% +5.54% +5.49% +11.43% +7.36% +7.14% +6.87% +6.40% +5.56% 2006 +4.93% +4.40% +15.79% +15.30% +26.32% +16.53% +15.00% +13.72% +11.09% +7.59% 2005 +4.49% +2.40% +4.96% +10.45% +13.63% 2004 +4.30% +4.30% +10.82% +18.03% +20.00% 2003 +4.11% +4.11% +28.54% +42.92% +37.94% 2002 +5.00% +10.27% -22.05% -18.14% -15.98% 2001 +5.39% +8.61% -11.94% -9.04% -21.94% 2000 +6.42% +11.67% -9.14% - - 1999 +5.99% -0.85% +20.95% - - 1998 +5.74% +8.70% +28.44% - - 1997 +6.77% +9.60% +33.17% - - 1996 +6.76% +3.66% +22.85% - - 1995 +7.03% +18.31% +37.41% - - 1994 +7.22% -2.96% +1.33% - - 1993 +6.14% +9.52% +10.13% - - 1992 +7.23% +7.20% +7.70% - - 1991 +8.15% +15.75% +30.77% - - 1990 +8.90% +8.00% -3.15% - - 1989 +8.81% +13.89% +31.03% - - 1988 +8.81% +3.63% +11.84% - -