1964

7.0

2004

4.2

1992

5.7

2003

5.8

2020

5.4

2010

7.8

7.0

1986

5.8

1959

8.0

1995

5.2

1982

7.4

1994

7.1

1931

8.3

1974

7.0

1945

8.0

1984

7.2

1987

6.8

1962

7.7

2015

5.4

1993

6.5