1985

6.7

2017

7.1

2012

7.1

1971

8.2

2003

8.0

2015

5.7

1997

6.4

2015

8.0

1957

8.1

1950

8.1

2000

7.3

1973

8.0

2008

7.0

1960

7.5

1998

7.8

1995

6.8

2017

6.3

1973

7.5

1974

7.9

1986

6.7