2004

7.2

2001

6.3

2003

6.7

2006

7.0

1998

6.9

1972

7.1

1984

7.5

2018

6.7

2023

6.3

2017

3.0

2005

5.6

1966

6.4

1970

4.1

1981

7.0

1963

7.2

1959

6.9

2004

6.1

1976

7.3

1982

6.8

2001

6.2