Year	%
1989	109.33
1994	85.32
1998	27.86
1999	22.38
2000	22.3
2001	20.81
2002	20.97
2003	19.52
2004	18.22
2005	15.33
2006	15.14
2007	14.19
2008	13.46
2009	13.94
2010	13.75
2011	13.7
2012	13.31
2013	12.67
2015	11.82
2016	12.88
2019	11.96
2020	12.26
2021	12.29