Year	%
1989	123.48
1994	84.14
1998	27.73
1999	22.12
2000	22.07
2001	20.83
2002	20.88
2003	19.62
2004	18.5
2005	15.34
2006	15.34
2007	14.54
2008	14.5
2009	14.24
2010	14.23
2011	14.24
2012	14.16
2013	13.41
2015	13.32
2016	13.32
2019	13.45
2020	13.46
2021	13.45