2007

4.0

1980

6.6

2017

6.9

1997

6.1

2002

6.8

2009

6.6

2005

6.3

1964

7.1

1970

0.0

1996

6.4

1988

6.3

1979

7.2

2013

8.5

1984

6.5

2005

5.3

1980

6.0

2003

5.9

1981

6.8

2001

7.3

1992

7.5