2001

6.9

1979

7.7

1977

7.7

2000

7.0

2004

5.6

2004

8.1

1987

7.3

2005

7.4

2005

7.8

1984

6.3

1965

5.0

2012

5.3

1931

8.3

2006

7.1

2006

7.3

2002

7.4

2006

6.3

2019

6.6

2012

3.0

2010

4.6