Year	Percent
1989	109.04012
1990	128.5347
1991	84.87859
1992	287.56807
1993	326.52435
1994	581.11809
1995	311.9151
1996	179.28153
1997	155.6714
1998	206.18709
1999	226.30727
2000	131.0752
2001	119.00792
2002	83.86081
2003	73.01806
2004	57.03733
2005	50.50635
2006	27.77323
2007	22.57655
2008	22.00038
2009	24.77714
2010	22.78592
2011	20.43904
2012	20.10588
2013	21.74028
2014	24.50906
2015	28.61407
2016	41.19787