Year	% change from 1990
1991	3.36187021472087
1992	6.45378433612047
1993	9.13571044123638
1994	13.1324505164734
1995	18.0325158267953
1996	22.2157034025209
1997	25.6805520107647
1998	25.9943462310065
1999	38.9845724960129
2000	34.1170574934631
2001	33.9165286875793
2002	36.8169368585539
2003	41.3527486686089
2004	49.1353443528663
2005	51.5061094741191
2006	59.1804908482485
2007	69.5076380731604
2008	73.1230507401015
2009	82.7018662965525
2010	94.1804423291666
2011	98.1755823231413
2012	108.175841960368