Year % change from 1990 1991 -0.524560439213029 1992 1.19565256320571 1993 -7.47472096303773 1994 -1.90334223562695 1995 1.36728122574064 1996 2.32407476228726 1997 5.46594577558304 1998 76.6187473274217 1999 43.7839061783356 2000 24.456253151216 2001 19.161582310504 2002 22.0603805163442 2003 16.3926552164727 2004 35.240348441204 2005 30.0132042115346 2006 17.0279501008765 2007 64.2740232705934 2008 43.9601775164595 2009 34.0845240429343 2010 49.376495912951 2011 51.6618302465486 2012 53.7846287615804