Year	%
1997	11.610486891385756
1999	13.043478260869566
2000	13.200000000000006
2001	15.306122448979595
2002	15.986394557823123
2003	16.320474777448062
2004	18.75
2005	18.75000000000001
2006	17.99410029498525
2007	17.88856304985337
2008	17.10144927536232
2009	16.95906432748538
2010	13.953488372093023
2011	14.868804664723035
2012	15.294117647058826
2013	16.470588235294127
2014	16.568047337278113
2015	19.648093841642243
2016	19.648093841642247
2017	20.76023391812866
2018	21.637426900584803
2019	22.514619883040933
2020	24.85380116959065
2021	25.364431486880466
2022	25.36873156342184
2023	26.08695652173914