Year	Percent
2000	99.69871
2001	99.66425
2002	99.62979
2003	99.54331
2004	98.77182
2005	98.00085
2006	97.23038
2007	96.46042
2008	95.69098
2009	94.92204
2010	94.15362
2011	93.3857
2012	92.6183
2013	91.8514
2014	91.08502
2015	91.05339
2016	91.02175
2017	90.99012
2018	90.95849
2019	90.92685
2020	90.89522
2021	90.86359
2022	90.83196