2018

6.5

2017

7.6

2003

7.4

2004

6.9

2007

6.3

1995

8.0

2006

6.7

1998

0.0

1970

6.8

1940

7.1

1978

5.9

2008

7.8

1982

7.9

2006

6.3

2010

7.8

2017

7.0

1995

6.2

2011

5.9

2000

2.8

1933

4.9