2005

6.3

2008

6.8

1995

6.3

1996

6.2

2016

7.1

1974

5.3

1982

6.5

1994

8.3

1947

7.6

1995

6.5

1990

7.0

1970

5.0

2016

0.0

2006

5.7

1971

7.0

2004

7.2

1998

6.7

2006

6.6

2007

7.4

1985

6.4