Year	%
1990	55.20238477930421
1991	53.84721883005992
1992	52.44792860117178
1993	48.007014038069926
1994	47.292294721373906
1995	47.68101287153393
1996	47.54756396342555
1997	47.25635278218729
1998	46.422417768171975
1999	45.31363131626624
2000	44.36435099221348
2001	44.13191027302241
2002	43.19530202836891
2003	42.45033555701423
2004	41.702863580310456
2005	40.9460051913053
2006	40.59825660195574
2007	39.81488562412594
2008	39.04215054510435
2009	38.352285243476
2010	37.89969812780845
2011	37.539145070882505
2012	37.09340089559935
2013	36.94778151955508
2014	36.81095983115926
2015	36.5213924305696
2016	36.55235382132041
2017	36.42302126955057
2018	36.473796725691514
2019	36.306095893904875
2020	36.382537093002895
2021	36.369893659781106
2022	36.32239615808456