Year % change from 1990 1991 -1.17420482027298 1992 2.28578818862901 1993 8.22216454590696 1994 -4.21271988264501 1995 1.30033620475376 1996 4.65976721152335 1997 7.11137818127454 1998 32.8326648112022 1999 9.51767529251015 2000 -5.404774277016 2001 -6.23143159158651 2002 3.42551591014049 2003 11.1184274786519 2004 23.6496746373574 2005 41.240073643049 2006 12.9084342275442 2007 52.8738307354086 2008 11.5952150152951 2009 0.104865975902513 2010 51.3327539366671 2011 69.9096100074398 2012 72.2253995646794