Year	Percent
1984	39.67636
1985	64.51139
1986	67.01755
1987	181.08408
1988	202.47035
1989	196.28238
1990	189.42777
1991	147.42571
1992	234.9884
1993	227.33666
1994	239.24503
1995	233.75085
1996	165.27998
1997	136.89833
1998	138.18633
1999	107.62308
2000	116.37646
2001	75.13733
2002	82.10571
2003	72.33712
2004	69.2361
2005	59.64686
2006	36.36674
2007	34.73137
2008	32.15137
2009	38.91398
2010	42.09346
2011	35.92029
2012	37.87414
2013	49.46905
2014	51.77996
2015	68.58525
2016	95.66832