Year % change from 1990 1991 0.226275014780231 1992 6.32813122359419 1993 3.11255812197129 1994 -0.740691815300432 1995 0.333495450847265 1996 3.66179535764373 1997 14.1224758562139 1998 24.4192852898374 1999 29.3094128118852 2000 15.4897620541844 2001 9.54691716212235 2002 23.1448279434853 2003 24.183364142753 2004 32.7563620539658 2005 51.3031640683469 2006 33.0800503234615 2007 45.157071505563 2008 34.6629134999769 2009 27.826376644214 2010 30.5451385865413 2011 76.4248210946774 2012 79.6181099569807