Year	%
1990	25.0368188512518
1991	25.0327653997379
1992	24.9106078665078
1993	24.9173098125689
1994	24.7678018575851
1995	24.6588693957115
1996	24.582560296846
1997	24.3794326241135
1998	24.190800681431
1999	23.9837398373984
2000	23.9164086687307
2001	23.7075332348597
2002	23.4961075725407
2003	23.3174711080897
2004	23.1372549019608
2005	23.0188679245283
2006	22.8952150211993
2007	22.6557949912638
2008	22.2905027932961
2009	22.0031965903037
2010	21.7501264542236
2011	21.4697406340058
2012	21.1678832116788
2013	20.8981001727116
2014	20.5170291341814
2015	20.0779727095517
2016	19.6296296296296
2017	19.1496837666901
2018	18.6582109479306
2019	18.18759936407
2020	17.8169656430526
2021	17.4686497521143
2022	17.3125174240312