Year	% change from 1990
1991	6.40649679726593
1992	12.5662612447648
1993	14.7574240203928
1994	15.0091323635776
1995	16.3604835125748
1996	21.3811314648756
1997	20.4752112126069
1998	18.6259581739565
1999	23.5709232007644
2000	16.330715099466
2001	13.4646377146919
2002	15.125555466841
2003	18.38161821194
2004	25.1808800185619
2005	25.1892594457949
2006	30.3464484031861
2007	29.7869722763062
2008	30.410580893334
2009	28.3326743106792
2010	27.4729813160847
2011	29.3440836985929
2012	31.1212984763814