Year	Percent
2000	41.14431
2001	42.25468
2002	43.3768
2003	44.36387
2004	45.35133
2005	46.33602
2006	47.15023
2007	47.96147
2008	48.7704
2009	49.57516
2010	50.37684
2011	51.17484
2012	51.96854
2013	52.75735
2014	53.54151
2015	54.31693
2016	55.08427
2017	55.84291
2018	56.59175
2019	56.88304
2020	57.16774
2021	57.44673
2022	57.71956