Year	%
1990	25.3164556962025
1991	25
1992	26.0416666666667
1993	25.4716981132076
1994	25.8620689655172
1995	26.1904761904762
1996	26.2773722627737
1997	26.8456375838926
1998	26.7080745341615
1999	27.0114942528736
2000	27.2727272727273
2001	27.363184079602
2002	27.4418604651163
2003	27.7056277056277
2004	27.710843373494
2005	27.9850746268657
2006	28.6184210526316
2007	28.6127167630058
2008	29.0502793296089
2009	29.3963254593176
2010	29.5566502463054
2011	29.5774647887324
2012	29.5774647887324
2013	29.1878172588833
2014	29.0666666666667
2015	28.9189189189189
2016	29.0155440414508
2017	29.1457286432161
2018	29.1571753986333
2019	29.0123456790123
2020	28.8679245283019
2021	28.7456445993031
2022	28.4591194968554