Year	%
1990	73.1736526946108
1991	68.3187560738581
1992	62.88
1993	56.864064602961
1994	51.4197212183789
1995	48.8077496274218
1996	46.7509920634921
1997	43.905746736735
1998	40.4297602782263
1999	36.428900138058
2000	32.293089319858
2001	28.4201371124527
2002	25.0909527045936
2003	22.5385792628491
2004	20.7569689414635
2005	19.6841276457783
2006	19.1451843143841
2007	19.0517410977769
2008	19.3030204982775
2009	19.8085158105354
2010	20.4989255348968
2011	21.3554549259865
2012	22.333670925522
2013	23.4163530071274
2014	24.6132381304116
2015	25.8856615177972
2016	27.1886334857167
2017	28.4613032844165
2018	29.6721275231589
2019	30.8018100354428
2020	31.8666996247275
2021	32.8848454748629
2022	33.8524626899117