Year	Percent
2000	58.94128
2001	57.32746
2002	55.71364
2003	54.17048
2004	52.62311
2005	51.07153
2006	49.51573
2007	47.95571
2008	46.39147
2009	44.82302
2010	43.25036
2011	41.67348
2012	40.09238
2013	38.50706
2014	36.91753
2015	35.32379
2016	33.72582
2017	32.12364
2018	30.51725
2019	28.90664
2020	27.29181
2021	25.67277
2022	24.04951