Year	Percent
1992	2.2898
1993	2.21957
1994	1.11853
1995	0.78612
1996	1.26822
1997	1.21631
1998	1.26648
1999	1.26343
2000	0.94529
2001	1.11559
2002	1.08403
2003	1.75601
2004	1.5429
2005	1.52747
2006	1.27706
2007	1.26226
2008	1.25239
2009	1.23121
2010	1.21553
2011	1.20708
2012	1.1951
2013	1.18295
2014	1.94383
2015	1.92084
2016	2.15919
2017	2.16216
2018	2.11406
2019	2.11698
2020	2.88883