Year	Percent
2000	31.16604
2001	32.51812
2002	33.86738
2003	35.21381
2004	36.55742
2005	37.8982
2006	39.23616
2007	40.57129
2008	41.90359
2009	43.23307
2010	44.55972
2011	45.88354
2012	47.20454
2013	48.52271
2014	49.83806
2015	51.15058
2016	52.46028
2017	53.76714
2018	55.07119
2019	56.3724
2020	57.67079
2021	58.96636
2022	60.2591