Year	Percent
1994	22.08275
1995	17.77813
1996	18.1349
1997	20.16169
1998	18.41417
1999	15.98404
2000	15.07635
2001	13.22813
2002	11.99226
2003	10.98888
2004	11.74037
2005	12.48658
2006	10.986
2007	10.66499
2008	10.02986
2009	11.23741
2010	10.1421
2011	8.74915
2012	8.99062
2013	9.36699
2014	8.97743
2015	8.32395
2016	8.6444
2017	9.90758
2018	9.14766
2019	9.10455
2020	9.53628
2021	9.85279
2022	9.99265