Year	%
1997	10.206896551724142
1998	10.919540229885062
2000	11.585365853658537
2001	12.282840597378847
2002	13.466711499663752
2003	13.708836239010582
2004	14.735467015022865
2005	16.237014236244715
2006	16.639209225700164
2007	17.306466011988274
2008	17.800845828527493
2009	18.464052287581698
2010	18.73716632443532
2011	20.535166318890393
2012	21.375802349521617
2013	22.45702005730659
2014	22.158043504977265
2015	23.636991028295377
2016	23.810068649885583
2017	24.016932159964362
2018	24.074279995552107
2019	24.078116025272834
2020	24.86859011797688
2021	25.925053028517564
2022	26.33820651548291
2023	27.03399765533412