2014

6.6

1982

6.4

2012

7.1

1971

7.7

1980

6.7

1968

6.3

1985

6.2

1999

7.2

1968

6.3

2014

7.4

1973

8.0

1955

8.0

2010

7.0

1977

6.8

1963

7.1

1968

8.1

2010

7.3

2006

5.7

1979

7.6

1972

7.5