1979

8.2

2016

3.0

1988

7.3

1995

5.8

2006

5.2

2012

2.0

1985

6.2

2008

5.7

2006

6.5

1953

6.8

2019

5.6

1984

6.8

1995

7.9

2016

4.2

1981

7.4

1998

6.4

1995

5.8

1993

6.7

1979

6.7

2006

7.6