1949

7.7

1987

6.7

2002

7.6

1940

7.0

1989

7.3

1969

7.7

1988

7.7

1960

7.5

2015

7.4

1966

7.1

1970

7.1

1955

7.2

1969

7.6

1976

7.8

2018

7.1

1928

7.6

2019

7.3

1989

7.5

2014

6.1

2011

7.6