1967

7.6

1997

7.3

1990

9.0

1998

7.0

2005

7.3

2003

5.5

1977

6.5

1989

7.4

2011

8.1

1999

7.4

1976

0.0

2022

9.0

1995

3.0

1991

6.9

2004

6.0

1975

6.9

1987

7.0

1999

7.3

2006

0.0

2024

6.1