1974

7.9

2006

5.5

1990

6.4

2012

0.0

1986

7.2

1928

0.0

1982

6.8

2002

6.3

1985

6.8

2003

4.2

1961

6.2

1991

7.3

2004

5.5

1928

7.8

1939

5.8

1982

6.2

0.0

1998

6.2

1988

6.3

1992

5.0