2001

7.3

1970

7.1

1999

6.4

1964

7.1

1980

5.1

2005

6.4

2013

6.8

1996

6.4

2006

6.3

1990

6.7

2023

6.5

1975

5.5

2017

6.9

1965

8.1

1999

6.5

1963

7.9

1924

7.8

2023

0.0

1942

4.3

1987

6.9