Year % change from 1990 1991 -3.40425444380481 1992 6.36966365056035 1993 0.0784234439580089 1994 0.419326281688504 1995 2.38266773013411 1996 3.88189680163733 1997 16.1296398350907 1998 8.82234458954261 1999 17.9743420695305 2000 9.30937332995352 2001 8.76576613749678 2002 7.59791160449821 2003 4.14114099007081 2004 24.7127816597526 2005 14.3219678462432 2006 19.4652498660252 2007 43.7817612542286 2008 31.7761492269242 2009 33.3034487446663 2010 38.5003047155006 2011 40.3587844096266 2012 42.2172641037535