Year % change from 1990 1991 -12.2642862835738 1992 -3.29799952179805 1993 -6.72073005499323 1994 -6.3198374113334 1995 1.23037379453255 1996 0.916553757870409 1997 8.06866183151351 1998 6.54140431975772 1999 14.3211524667251 2000 17.8718020243883 2001 16.3325894636168 2002 18.1706782497808 2003 28.5626046066789 2004 36.3343827209692 2005 28.6721925559895 2006 72.4087431258468 2007 63.8957519725831 2008 80.6128955128716 2009 71.6735076113812 2010 79.3635928907308 2011 81.1572288196382 2012 82.9508647485455