1983

7.2

2018

7.0

2014

8.0

2018

6.2

2014

8.5

1979

6.5

1970

7.5

2002

2.7

1982

7.2

2000

3.0

2001

5.8

2002

6.7

2009

6.3

1991

6.9

1999

7.4

2005

7.3

2019

5.9

2022

0.0

1977

6.5

2001

2.0