Year	%
1997	3.52941176470588
1998	3.52941176470588
1999	7.3394495412844
2000	7.3394495412844
2001	7.3394495412844
2002	7.3394495412844
2005	10.4761904761905
2006	10.4761904761905
2007	10.4761904761905
2008	10.4761904761905
2009	9.61538461538462
2010	9.61538461538462
2011	12.5
2012	12.5
2016	7.19424460431655
2017	8.57142857142857
2018	8.57142857142857
2019	8.57142857142857
2020	8.57142857142857
2021	12.8571428571429
2022	12.8571428571429
2023	12.8571428571429