Year % change from 1990 1991 -0.858594411515656 1992 18.4288738357324 1993 13.1608806096528 1994 9.83573243014395 1995 20.0046570702794 1996 18.3988145639289 1997 26.0114309906859 1998 59.3357324301439 1999 22.803132938188 2000 24.0850973751058 2001 20.7243861134632 2002 33.5046570702794 2003 31.038950042337 2004 47.4009314140559 2005 54.881033022862 2006 41.9297205757832 2007 41.77900084674 2008 49.4741744284505 2009 59.7019475021168 2010 42.2468247248095 2011 43.6692929720576 2012 45.0917612193057