Year	%
1996	21.29
1999	18.1
2000	18.38
2001	13.36
2002	13.37
2003	13.26
2006	3.83
2007	11.11
2010	13.03
2011	12.96
2012	10.71
2013	10.71
2015	10.19
2016	9.8
2017	9.38
2018	9.17
2019	8.98
2020	9.23
2021	9.78