Year	Percent
2000	42.48232
2001	42.12811
2002	41.77389
2003	41.41968
2004	41.06547
2005	42.43411
2006	43.77277
2007	45.08145
2008	46.36016
2009	47.60888
2010	48.82762
2011	50.01638
2012	51.17517
2013	52.30397
2014	53.40279
2015	54.47164
2016	55.5105
2017	56.51938
2018	57.49829
2019	58.44721
2020	59.36615
2021	60.25512
2022	61.1141