1964

7.0

1993

4.8

1956

6.6

2005

5.8

1954

8.4

1962

6.9

2018

6.8

2008

7.0

1952

7.6

1977

8.2

1994

8.7

2012

7.8

1983

7.9

1983

5.5

1992

5.7

2018

8.4

1985

7.2

2014

8.5

2005

7.0

1998

6.4