Year	Percent
1976	0.28
1978	0.42
1979	0.56
1980	0.65
1982	1.48
1984	1.79
1987	2.06
1988	1.63
1989	0.84
1990	1.1
1994	0.98258
1996	0.92475
1997	0.77105
1998	3.31694
1999	2.6373
2000	2.2451
2001	1.64
2003	1
2004	1.09
2005	0.89
2006	0.79
2007	0.75
2008	0.74
2009	1.04
2010	0.4484
2011	0.45
2012	0.4
2013	0.3296
2014	0.3823
2015	0.4056
2016	0.4468