Year	%
1996	25.58
1999	22.48
2000	21.64
2001	14.84
2002	14.35
2003	14.94
2004	12.82
2006	14.17
2007	12.29
2010	13.35
2011	13.82
2012	13.9
2013	12.48
2020	8.39
2021	8.62