Year	% change from 1990
1991	11.6392699510915
1992	19.5180722891566
1993	22.413217225337
1994	20.537993558392
1995	26.6014553262555
1996	30.9352260527257
1997	37.5152093522605
1998	45.7902898723607
1999	46.8173684838364
2000	50.3686031253728
2001	36.0121674818084
2002	36.4046284146487
2003	39.8437313610879
2004	42.0529643325778
2005	41.9062388166527
2006	44.6582369080282
2007	47.3923416438029
2008	49.086245973995
2009	47.9792437075033
2010	49.4954073720625
2011	50.9903614457832
2012	52.4853155195038