Year	%
1990	9.5411638188553
1991	8.88816779256025
1992	10.4793075573257
1993	12.803861756659
1994	15.2512998266898
1995	17.6154373091526
1996	19.816759001357
1997	21.8384601547041
1998	23.7288539432928
1999	25.5173867228662
2000	27.3047614852663
2001	29.0725808769016
2002	30.7241373782283
2003	32.2089803658518
2004	33.5314975044804
2005	34.7275875229221
2006	35.7831123352707
2007	36.7606395235479
2008	37.6617316791313
2009	38.5033228883303
2010	39.1790298631291
2011	39.7012102874433
2012	40.1171297006271
2013	40.4618850920015
2014	40.7430343047172
2015	40.9687856870955
2016	41.1584984195537
2017	41.3140402231958
2018	41.4205128991217
2019	41.4691032504271
2020	41.4499495889708
2021	41.3115487914055
2022	41.1250400852203