2017

7.2

1999

8.4

1972

7.1

2001

7.4

1995

6.6

1990

7.8

2002

7.3

1972

7.8

1962

8.0

1940

7.8

1997

7.9

1987

8.1

1985

7.2

2004

7.9

1984

7.5

1996

8.0

1994

7.4

1977

7.1

1979

6.9

1959

7.9