1968

7.6

1975

5.5

2006

7.4

2023

7.2

1969

4.3

1988

7.1

2002

6.4

1976

5.6

2009

7.5

2003

7.8

1960

6.1

1969

4.5

1971

5.2

1977

5.6

2004

3.7

1969

6.5

2004

1.5

1969

4.1

1999

4.8

1995

3.8