1994
6.7
1997
5.5
2009
6.1
2005
5.5
2012
6.3
2010
6.7
2005
7.3
1999
6.5
2000
6.5
1992
6.5
2002
6.2
1997
7.3
2011
7.3
2019
6.5
2020
4.9
2018
6.4
2020
5.7