1983

5.5

1989

6.5

1974

6.1

2000

6.4

1987

6.9

1974

6.6

1994

5.7

1992

4.5

1990

7.5

1998

7.8

2022

6.6

1965

6.8

1967

6.7

2006

5.8

1995

6.5

2004

5.9

1994

6.6

2015

5.2

1991

6.5

1995

6.2