1997

7.7

1994

6.3

1988

7.5

2001

5.4

1986

7.8

1994

6.8

2002

6.7

2024

0.0

1960

7.5

1984

6.9

2002

7.0

2000

5.9

2004

6.8

1930

7.2

2005

6.0

1995

6.4

2007

7.0

2002

6.0

2006

6.7

2007

6.4