2005

5.2

1997

6.2

2006

6.7

1971

7.7

1976

7.5

1994

8.7

2024

7.2

1991

5.9

2010

7.6

1972

8.7

2014

6.5

1995

7.8

2000

6.8

1987

6.2

1994

7.4

2001

5.8

1997

6.7

1940

7.1

1993

5.5

2024

6.5