2001

7.4

2003

7.2

1975

6.6

1989

6.1

1955

7.2

1995

7.2

2005

6.7

1992

6.3

2017

7.3

1938

5.4

1998

7.2

1991

5.8

1985

6.7

1997

7.0

1962

7.5

1984

0.0

1988

7.1

2017

6.4

2018

6.7

2019

5.9