1984

6.7

2001

7.3

2019

5.4

2004

5.9

1995

7.0

2007

6.2

2019

4.0

2007

7.1

2013

9.4

2000

6.9

1977

0.0

1991

6.6

1996

6.9

2006

6.5

2014

3.0

2008

6.4

2006

6.5

1970

7.5

1979

7.0

1983

6.7