Year	Percent
1995	0.376
1996	0.378
1997	0.361
1998	0.351
1999	0.344
2000	0.342
2001	0.344
2002	0.339
2003	0.338
2004	0.337
2005	0.342
2006	0.347
2007	0.348
2008	0.347
2009	0.332
2010	0.322
2011	0.315
2012	0.303
2013	0.292
2014	0.29
2015	0.295
2016	0.293
2017	0.295
2018	0.293
2019	0.292
2020	0.289
2021	0.286
2022	0.284
2023	0.281
2024	0.278