1981

0.0

1998

6.0

1998

7.9

2000

6.9

2019

7.0

1997

6.1

1978

7.3

2006

5.8

1992

7.2

1957

8.2

2008

6.0

1993

7.1

2008

4.0

1965

7.7

1997

8.0

1953

5.9

1968

0.0

2011

5.5

1962

6.4

2019

7.1