Year	% change from 1990
1991	-0.532975063853647
1992	-0.100394194853315
1993	2.51797499003441
1994	6.55441217722528
1995	9.32337265439298
1996	12.1565558885624
1997	14.7262043612419
1998	21.9412989237152
1999	29.5306571390607
2000	22.3118716135414
2001	26.097323313599
2002	28.3525017347526
2003	20.9831249169533
2004	22.8352501734753
2005	24.17654614442
2006	24.5456424490278
2007	27.5847814211684
2008	29.257525873651
2009	34.9622783576691
2010	38.7019621159553
2011	40.0889817371149
2012	41.4760013582744