1974

6.4

2002

5.3

1982

6.2

1988

6.7

1968

6.3

2002

6.7

1991

7.9

1971

5.4

2000

7.4

1993

6.9

1961

8.1

2004

6.8

1962

7.7

2009

5.7

1991

5.7

2009

4.3

1999

5.9

2024

10.0

2009

6.4

1944

7.6