1984

7.0

1992

5.3

2015

7.2

2017

6.5

1997

6.1

1968

7.6

1976

6.8

1962

4.9

1983

5.9

1973

7.5

1992

0.0

1993

0.0

2007

5.0

1964

6.3

1954

6.0

1932

6.0

2015

7.1

1954

6.8

2002

0.0

1998

7.0