2020

5.2

1974

6.5

2000

7.2

1959

7.7

1974

8.6

2008

8.5

1977

7.3

1972

8.7

1967

5.5

2001

7.0

1996

7.5

1985

7.0

1965

7.4

1969

6.0

2008

7.3

1989

6.7

1982

7.3

1927

8.1

1987

6.9

2004

6.7