Year	Percent
1991	110.37671
1992	1030.77681
1993	1058.7145
1994	1945.74861
1995	661.50408
1996	53.71433
1997	71.64957
1998	76.58045
1999	316.79344
2000	185.29076
2001	79.53457
2002	44.89374
2003	30.68532
2004	22.67512
2005	18.97216
2006	10.74862
2007	12.8727
2008	21.21354
2009	5.68382
2010	15.05985
2011	70.77143
2012	75.20112
2013	21.23267
2014	18.10899
2015	16.02249
2016	8.34192
2017	8.17536