Year	% change from 1990
1991	13.9156551509485
1992	12.3784624961091
1993	16.0079365079354
1994	16.2447868036095
1995	31.4365079365072
1996	45.3988484282599
1997	57.6495487083718
1998	54.5284780578894
1999	99.5020230314342
2000	119.421101774042
2001	193.962029256146
2002	227.108621226267
2003	261.500155617802
2004	267.724867724867
2005	290.133831310301
2006	342.888266417677
2007	376.812947401183
2008	411.204481792716
2009	382.415188297541
2010	413.383131030188
2011	413.383131030188
2012	413.383131030188