Year	Percent
1991	3.069
1992	2.668
1993	2.609
1994	2.577
1995	2.52
1996	2.074
1997	1.66
1998	1.78
1999	1.453
2000	1.967
2001	1.708
2002	1.63
2003	1.764
2004	1.868
2005	1.606
2006	1.463
2007	1.573
2008	1.091
2009	1.121
2010	0.85
2011	0.884
2012	1.086
2013	0.986
2014	0.894
2015	1.06
2016	1.039
2017	1.066
2018	1.04
2019	1.012
2020	0.987
2021	0.961
2022	0.94