1989

8.0

2009

7.9

2009

7.6

1978

7.1

2005

7.0

2004

4.2

2007

4.8

2002

7.5

2021

6.0

2004

7.7

1971

7.8

2000

8.5

1983

7.6

2004

8.4

1997

0.0

1983

8.0

2021

4.8

1991

6.6

1974

5.3

2003

5.3