2019

6.7

1997

7.0

1982

6.3

1971

7.5

2002

6.5

1980

5.5

1961

7.4

2006

4.2

1996

6.8

1998

7.1

1962

7.0

1991

7.8

1988

7.3

1976

7.9

1972

6.8

1997

8.4

1975

6.7

1975

8.2

1984

7.8

1960

5.0