Year	%
1997	7.8740157480315
1998	7.8740157480315
1999	7.8740157480315
2000	20.5298013245033
2001	20.5298013245033
2002	20.5298013245033
2004	21.7105263157895
2005	21.7105263157895
2006	21.7105263157895
2007	20.9150326797386
2008	20.9150326797386
2009	23.5294117647059
2010	23.5294117647059
2011	23.841059602649
2012	23.841059602649
2013	23.841059602649
2014	23.841059602649
2015	15.2317880794702
2016	12.5827814569536
2017	18.5430463576159
2018	18.5430463576159
2019	20.5298013245033
2020	31.1258278145695
2021	31.1258278145695
2022	31.7880794701987
2023	31.7880794701987