2005

6.3

2016

3.3

1984

6.5

1970

0.0

2001

7.3

2013

8.5

2003

5.9

2002

6.8

1979

7.2

1980

6.0

1988

6.3

1992

7.5

1997

6.1

1980

6.6

1981

6.8

1996

6.4

2009

6.6

2007

4.0

1970

7.2

1964

7.1