1968

7.6

1976

5.6

1993

7.7

2002

5.5

1975

5.6

1969

3.5

1988

7.1

2001

5.1

1960

6.1

1995

4.0

2023

7.2

2007

6.1

1971

5.2

1969

4.5

1984

1.0

1977

5.7

2004

1.6

1969

6.5

2000

3.7

2004

5.5