Year	Percent
2000	28.05317
2001	28.36561
2002	28.73359
2003	29.10331
2004	29.4748
2005	29.84805
2006	30.22314
2007	30.60012
2008	30.97903
2009	31.35986
2010	31.7427
2011	32.12776
2012	32.51508
2013	32.90477
2014	33.29685
2015	33.6914
2016	34.08849
2017	34.4882
2018	34.89064
2019	35.29579
2020	35.70382
2021	36.11476
2022	36.52872