Year % change from 1990 1991 2.09142593891676 1992 6.65015862379461 1993 11.5978598875498 1994 22.8868483598404 1995 26.6100576908982 1996 30.0291072045566 1997 31.9022291092986 1998 35.5181187113256 1999 38.3995225580835 2000 41.1113088818855 2001 44.8172423541237 2002 48.2310567590489 2003 53.3865918395125 2004 74.1704970212231 2005 80.739511459653 2006 94.5444931891235 2007 101.025034289962 2008 105.089572710425 2009 91.1479546430179 2010 75.3065156163293 2011 77.0595807724926 2012 78.8126459286559