1991

6.2

1991

5.5

1992

6.3

1966

6.3

1964

6.2

1965

6.1

1966

6.1

2000

6.4

1972

4.9

1960

6.6

2006

7.6

2001

6.8

1965

6.9

1966

6.8

1990

6.5

2016

6.2

2016

6.4

2006

6.8

1966

6.2

1953

6.6