1956

7.2

2007

6.7

1997

6.6

1998

6.0

1954

7.2

2004

6.1

1997

7.5

2002

7.3

1995

6.5

1998

6.8

1999

7.0

2004

6.0

1981

7.4

1976

7.6

1989

5.0

1982

7.9

2019

7.2

1938

7.1

1990

6.1

1991

6.6