Year	Percent
2000	30.00435
2001	30.24237
2002	30.66965
2003	31.09989
2004	31.53309
2005	31.96924
2006	32.40835
2007	32.85042
2008	33.29544
2009	33.74342
2010	34.19435
2011	34.64824
2012	35.10508
2013	35.56488
2014	36.02764
2015	36.49335
2016	36.96202
2017	37.43365
2018	37.90823
2019	38.38576
2020	38.86626
2021	39.34971
2022	39.83611