2020

6.7

2019

0.0

1975

7.0

1978

7.6

1981

6.3

1953

6.0

1973

7.1

1954

5.5

1980

5.0

1993

5.5

1998

7.0

1965

6.2

1984

6.5

1975

6.9

1997

7.4

1977

5.8

1996

5.8

1999

7.5

1990

6.9

2005

8.1