2001
6.4
2008
5.8
2013
6.2
1990
6.4
1999
6.7
1997
5.3
2014
7.8
2014
6.9
1998
6.1
2002
5.4
1998
6.6
2012
5.3
2016
7.6
2018
6.7
1997
8.2
1978
7.7
2013
6.4
2000
7.2
2013
5.8
1984
7.2
2001
6.6
2014
6.2
1988
7.4
2005
4.7
2012
6.3
2012
6.4
2001
6.4
2015
6.0