2015

6.0

2011

6.7

2010

6.2

2010

6.6

1978

7.6

1991

5.0

1952

7.4

2019

7.5

1972

7.9

1964

7.7

1965

7.2

2007

7.3

2010

7.6

1963

7.0

2000

6.9

1975

7.5

1963

7.5

1960

8.0

1965

7.2