Year	Percent
1995	4.13064
1996	4.12813
1997	4.08874
1998	5.05183
1999	3.62815
2000	3.88501
2001	3.49397
2002	3.55352
2003	3.46019
2004	3.6195
2005	3.28731
2006	3.14434
2007	3.92554
2008	3.40144
2009	2.47117
2010	3.17107
2011	3.67987
2012	3.31546
2013	3.08811
2014	3.16427
2015	2.85805
2016	2.11361
2017	2.38621
2018	2.0894
2019	2.37681
2020	2.05033
2021	2.02065
2022	2.51574