1953

6.1

2018

6.6

2014

5.6

2001

6.1

1976

6.5

2009

6.5

1986

5.8

1981

7.0

1982

5.4

1929

7.5

1987

7.0

1952

6.7

1956

6.1

1946

7.6

2004

6.6

1989

5.0

2001

5.8

1980

6.1

1931

6.9

1997

6.1