1996

7.3

1993

7.2

1953

7.3

1999

7.1

1993

6.7

2004

7.3

2016

5.8

2017

6.4

1980

6.6

1982

6.4

1988

7.5

2001

6.8

2001

5.4

1974

7.8

1955

7.5

1968

7.3

1962

7.2

1994

8.5

1999

8.0

2005

7.5