Year	Percent
1991	2.768
1992	3.196
1993	2.159
1994	2.267
1995	1.833
1996	1.681
1997	2.876
1998	3.214
1999	1.759
2000	2.235
2001	2.83
2002	3.24
2003	3.961
2004	4.711
2005	3.821
2006	3.676
2007	3.332
2008	2.843
2009	2.584
2010	2.222
2011	1.998
2012	1.829
2013	1.727
2014	1.199
2015	0.93
2016	0.969
2017	0.98
2018	0.981
2019	0.965
2020	0.931
2021	0.901
2022	0.871