1996

7.0

1999

7.5

2025

8.0

2007

6.2

2006

6.2

2001

7.4

1991

5.7

2006

7.4

2006

1.0

2000

4.4

1982

6.2

1977

5.5

1993

5.4

1970

5.2

1988

4.4

1970

6.4

1993

0.0

1990

5.7

1980

4.4

1975

5.0