1992

7.8

2016

5.4

2003

7.2

2016

8.0

1979

6.4

1999

6.0

1984

7.2

2008

7.6

2000

0.0

2016

4.7

2017

6.8

2014

6.3

2005

7.7

1965

7.6

1947

6.0

1991

6.7

2014

5.5

0.0

2014

7.3

1970

6.7