Year	% change from 1990
1991	6.09600267767345
1998	76.2846432693707
1999	98.8112664446519
2000	102.196395467298
2001	107.094703552513
2002	113.772373496136
2003	135.603941960907
2004	167.659706428871
2005	179.313259876155
2006	209.729250055422
2007	250.960356599319
2008	278.321680921487
2009	292.328330660543
2010	347.672092481813
2011	359.045896282604
2012	369.345958317801