2009

7.0

2002

6.2

1984

6.3

2007

6.0

1980

5.6

1977

6.9

2017

6.5

1998

6.2

1999

5.8

1982

7.3

2020

6.8

2019

5.6

1967

0.0

1991

7.0

1994

2.0

1976

4.5

1992

4.5

1982

6.5

1998

3.8

2005

5.9