1996

6.4

1999

7.3

2003

6.6

1997

6.7

1988

5.2

2024

7.0

2006

5.0

1981

6.8

1991

6.3

2008

6.0

1937

5.4

2022

5.0

1941

5.2

2004

5.6

1967

7.4

1964

7.6

2004

6.3

1939

6.2

1978

7.4

2014

4.0