Year	% change from 1990
1991	0.149383207710385
1992	0.61026365870589
1993	2.76471145089143
1994	7.12665215134847
1995	17.3317164093804
1996	30.6072768106328
1997	39.9268956692299
1998	-46.7243416693029
1999	-29.5316034640886
2000	-9.86410657334947
2001	13.5281408421272
2002	34.41036681106
2003	62.8096202622535
2004	88.8980019944934
2005	129.132459367437
2006	152.309094707564
2007	180.00310925988
2008	207.653512565975
2009	416.811551920555
2010	645.698041084658
2011	645.698041084581
2012	645.698041084685