Year	Percent
1990	42.04694
1991	43.85518
1992	44.70486
1993	44.82485
1994	41.58496
1995	43.65036
1996	44.0136
1997	42.6019
1998	26.54908
1999	26.4323
2000	26.20826
2001	25.80029
2002	25.16308
2003	24.91073
2004	25.69698
2005	24.64884
2006	23.66931
2007	23.24549
2008	24.76549
2009	26.03519
2010	25.58241
2011	24.97686
2012	26.55093
2013	26.79087
2014	25.80258
2015	26.74589
2016	27.44414
2017	28.75348
2018	27.8686
2019	26.59431
2020	25.2549
2021	24.78845
2022	24.26903