2008

6.9

1982

6.4

1970

7.6

1965

5.6

2008

5.2

2018

5.5

2002

3.0

2014

7.1

2018

5.9

1991

8.3

2005

7.0

2009

7.6

1983

6.2

1940

6.0

1972

6.7

1992

6.3

1996

6.9

2003

6.1

2012

4.0

1973

5.7