Year	%
1997	11.48243359040274
1998	10.968294772922032
1999	11.482433590402747
2000	12.960082944530845
2001	15.566835871404386
2002	16.116751269035518
2003	16.26751016719384
2004	17.141641854529983
2005	16.723404255319164
2006	17.099106763079543
2007	16.843896214376873
2008	16.81528662420381
2009	17.07006369426751
2010	17.027600849256892
2011	18.433375904640258
2012	19.267188143268832
2013	19.210201563142732
2014	19.705093833780158
2015	20.116487455197138
2016	19.89247311827957
2017	22.304488662656183
2018	22.72096251735308
2019	23.692734844979178
2020	24.98843128181398
2021	24.212962962962973
2022	25.06938020351527
2023	25.531914893617028