Year	Percent
1992	0.74546
1993	6.01828
1994	10.79643
1995	17.77041
1996	21.68581
1997	22.48974
1998	31.84561
1999	51.27631
2000	45.87695
2001	59.45856
2002	56.19019
2003	52.18893
2004	50.09715
2005	41.21251
2006	51.17813
2007	57.43045
2008	55.67565
2009	91.529
2010	92.75614
2011	85.90912
2012	77.25927
2013	82.73816
2014	97.78391
2015	134.93304
2016	127.77868