Year % change from 1990 1991 4.03916995671738 1992 5.33788028774709 1993 4.41450234263974 1994 0.979017088171807 1995 -4.23460244673133 1996 9.85299674742841 1997 13.6473544746622 1998 3.30148765158769 1999 8.42422991948553 2000 1.66152390976257 2001 6.02942847008583 2002 7.40046968709938 2003 5.98375800682043 2004 4.77499762374494 2005 4.63033585177732 2006 8.28652304040096 2007 11.1178599330939 2008 12.5818648849777 2009 7.34969896905304 2010 3.65386889099595 2011 4.69040757990593 2012 5.72694626881587