2005

6.8

2003

6.3

1919

6.9

2006

7.0

1989

7.8

1964

7.3

2006

5.4

1998

7.3

2002

0.0

2000

7.1

1995

8.1

1976

10.0

1988

7.7

2005

7.2

1996

7.4

1969

6.7

1969

4.0

2018

5.6

2007

6.5

1963

7.5