Year	Percent
1981	281.24668
1982	139.07342
1983	62.09076
1984	62.50541
1985	67.31119
1986	117.45735
1987	169.86395
1988	151.87945
1989	115.72314
1990	98.62318
1991	114.24746
1992	117.20198
1993	113.42671
1994	95.60152
1995	98.66118
1996	91.73749
1997	76.54435
1998	69.61481
1999	47.00525
2000	34.67112
2001	30.70044
2002	22.74324
2003	27.19056
2004	40.15679
2005	66.96452
2006	94.64422
2007	93.52939
2008	77.3974
2009	96.93684
2010	90.82893
2011	97.3828
2012	50.44653
2013	80.92529
2014	84.25076
2015	123.90711
2016	125.45034