Year	%
1990	32.2990126939351
1991	32.5898389095415
1992	32.9321663019694
1993	33.1389698736637
1994	33.3913043478261
1995	33.515625
1996	33.6158192090396
1997	33.704390847248
1998	33.7773549000951
1999	33.7416870843542
2000	33.730522456462
2001	33.7069207060801
2002	33.7042925278219
2003	33.6403172166795
2004	33.5994013469693
2005	33.5532746823069
2006	33.4770114942529
2007	33.3798882681564
2008	33.26544467074
2009	33.1500219973603
2010	33.0703624733476
2011	32.9890518487916
2012	32.906837265094
2013	32.8236887942713
2014	32.7402135231317
2015	32.7096077725801
2016	32.7941426868721
2017	32.8981302385558
2018	33.0162626572568
2019	33.1325301204819
2020	33.2578545145768
2021	33.4477550459975
2022	33.7195204095379