1986

6.5

1979

4.8

1999

6.4

1998

6.0

1982

6.0

1975

6.7

1975

7.0

1996

7.9

1995

7.0

1988

7.7

2005

7.2

1989

0.0

2000

5.5

2003

7.8

1971

6.4

1997

7.6

2024

10.0

1993

6.2

1997

6.8

2015

8.3