2016

6.7

2020

7.0

2016

5.0

2004

3.0

2012

2.0

1975

7.0

1978

7.5

1981

6.3

1953

6.2

1973

7.0

1954

5.5

1980

5.0

1993

5.3

1998

7.0

1965

6.1

1975

6.8

1997

7.3

1977

5.8

1996

5.7

1990

6.9