1991

7.6

2019

6.8

1956

7.6

2004

5.8

1987

6.2

2000

5.7

1971

6.9

1942

0.0

1943

0.0

1942

3.0

1980

6.5

1939

4.0

1965

7.0

1997

7.7

1996

6.4

2001

6.1

1951

0.0

2005

7.0

1959

6.0

1960

6.3