Year	%
1996	27.33
1999	22.49
2000	21.64
2001	14.84
2002	14.35
2003	14.94
2004	14.47
2006	15.78
2007	14
2010	13.35
2011	13.82
2012	14.13
2013	13.44
2020	9.67
2021	9.99