1956

6.5

2004

7.0

2007

7.8

1984

6.3

1999

6.8

2001

6.2

1991

5.8

1960

7.3

2002

6.3

1998

5.4

2025

0.0

2001

0.0

2013

5.9

1976

6.5

1999

7.1

1981

7.1

2007

6.9

1970

6.1

1971

6.4

1972

6.2