1968

7.6

2007

4.2

2001

5.1

1988

7.1

2004

5.5

1976

5.6

2009

7.5

2002

5.5

1993

7.7

1969

3.5

1960

6.1

1999

5.5

2023

7.2

1969

6.5

1988

3.6

1968

3.5

1977

5.7

2007

6.1

2003

7.8

1969

4.1