Year	Percent
1993	1.99636
1994	1.93952
1995	3.15456
1996	2.97383
1997	2.28312
1998	1.74434
1999	1.57383
2000	1.65558
2001	1.84334
2002	1.77294
2003	1.838
2004	1.64945
2005	1.682
2006	1.59983
2007	1.48566
2008	1.4687
2009	1.5182
2010	1.27114
2011	1.08457
2012	1.09211
2013	0.98288
2014	0.98833
2015	1.12679
2016	1.11763
2017	1.18866