2007

6.4

2007

6.7

1996

5.6

2012

6.0

2003

6.3

1997

6.8

1993

5.0

2002

5.4

2001

4.5

1937

6.6

1980

6.1

2004

1.0

2003

7.2

1970

7.1

1999

5.9

1994

0.0

1924

6.8

1970

5.0

2005

6.8

1999

5.5