1939

6.3

2010

6.3

1981

7.0

1989

4.9

1989

6.7

1988

6.2

2017

7.3

1984

2.4

1969

7.3

1996

5.5

1949

6.7

2009

7.1

2000

3.3

1971

6.2

2017

0.0

2005

2.8

2003

7.8

1972

7.1

1971

6.4

1967

7.8