2020

9.4

2014

10.0

1976

7.3

1984

6.8

1995

7.9

2012

6.4

1961

8.0

2005

7.5

1990

7.4

2001

6.6

1983

6.6

2015

7.4

1991

7.5

2017

6.8

2007

6.9

2001

6.4

2017

8.0

1992

8.1

1974

7.9

1993

7.0