Year	Percent
1995	4.80044
1996	4.59075
1997	3.83106
1998	3.54172
1999	3.28917
2000	3.10975
2001	2.96075
2002	2.72289
2003	2.65118
2004	2.60214
2005	2.30349
2006	2.25314
2007	1.99816
2008	1.96377
2009	1.95063
2010	1.93708
2011	1.83402
2012	1.92411
2013	2.09548
2014	2.07611
2015	2.09944
2016	2.06581
2017	2.09587
2018	2.03653
2019	2.08855
2020	2.17394
2021	2.15037
2022	1.85479