1945

7.7

1998

7.7

1994

6.3

2017

6.3

2006

7.1

1990

6.4

2002

6.0

1999

6.9

2003

5.0

2001

6.7

1996

7.2

1930

3.2

2000

6.8

1981

6.5

2008

1.0

1993

7.0

1984

5.8

2007

5.5

2006

7.3

2002

6.4