Year	%
1997	9.52380952380952
1999	4.76190476190476
2000	4.76190476190476
2002	22.7272727272727
2003	22.7272727272727
2004	22.7272727272727
2005	18.1818181818182
2006	18.1818181818182
2007	18.1818181818182
2008	18.1818181818182
2009	21.7391304347826
2010	14.2857142857143
2011	17.3913043478261
2012	17.3913043478261
2013	13.0434782608696
2014	13.0434782608696
2015	13.0434782608696
2016	13.0434782608696
2017	13.0434782608696
2018	13.0434782608696
2019	13.0434782608696
2020	18.1818181818182
2021	18.1818181818182
2022	18.1818181818182
2023	18.1818181818182