1946

6.7

1959

8.1

2002

7.4

1987

7.5

1965

7.2

1962

6.9

2013

6.1

1982

7.6

1988

7.6

1942

7.4

1980

6.6

1958

6.2

1990

7.4

1999

7.5

2012

9.3

1972

7.9

1952

6.7

1990

6.8

1998

7.1

1928

7.8