Year	%
1990	42.7362204724409
1991	42.9902707771656
1992	43.2383295010962
1993	43.4838454698152
1994	43.7224209206187
1995	43.9287786157348
1996	44.1173916818616
1997	44.2941601803411
1998	44.4607822543377
1999	44.6500167056465
2000	44.8960892924076
2001	45.1995820271682
2002	45.5472981483814
2003	45.909877950927
2004	46.2398503592229
2005	46.5394402035623
2006	46.7936588032463
2007	47.014553014553
2008	47.2133431685927
2009	47.4055273547659
2010	47.5463510848126
2011	47.5828648962977
2012	47.6105182926829
2013	47.8211913072852
2014	48.1903212688085
2015	48.4836305173926
2016	48.7638009049774
2017	49.0663417081825
2018	49.4013884953244
2019	49.6952714535902
2020	49.9757718399557
2021	50.2302405498282
2022	50.4390176979009