1979

8.0

1978

4.5

2015

5.6

2017

6.1

2003

7.4

1964

7.3

2002

5.9

1991

6.5

1992

5.4

1999

6.2

2003

6.6

2023

6.9

1993

5.8

1962

7.3

1988

5.0

2019

6.3

1970

7.1

1997

6.0

2001

6.6

1953

6.1