Year	Percent
1991	0.471
1992	0.45
1993	0.554
1994	0.592
1995	0.789
1996	1.111
1997	1.14
1998	1.124
1999	1.09
2000	0.963
2001	1.19
2002	1.311
2003	1.679
2004	1.856
2005	1.656
2006	1.434
2007	1.291
2008	1.762
2009	1.806
2010	1.863
2011	0.873
2012	0.839
2013	0.883
2014	0.815
2015	0.767
2016	0.808
2017	0.803
2018	0.783
2019	0.763
2020	0.743
2021	0.727
2022	0.712