Year	%
1990	42.0618556701031
1991	40.3114186851211
1992	38.4730538922156
1993	36.884154460719
1994	35.5663824604141
1995	34.1685649202733
1996	32.7904451682953
1997	31.5457413249211
1998	30.2158273381295
1999	28.8461538461539
2000	27.5449101796407
2001	26.3779527559055
2002	25.0483558994197
2003	23.9247311827957
2004	22.9950900163666
2005	22.1556886227545
2006	21.3498622589532
2007	20.5975842339479
2008	19.8940553266627
2009	19.2685589519651
2010	18.7404773996953
2011	18.2765151515151
2012	17.884019477645
2013	17.3100871731009
2014	16.783762685402
2015	16.3355408388521
2016	15.948575399583
2017	15.4985192497532
2018	14.9812734082397
2019	14.4936144936145
2020	14.0102098695406
2021	13.5289323553382
2022	13.1558339859045