2004

6.3

1998

7.3

2001

6.0

2003

6.0

1994

6.2

1993

7.0

1999

0.0

1945

6.9

1992

2.7

2000

6.7

1942

6.5

1975

5.2

1967

6.5

1969

5.5

1981

7.4

1998

5.1

2015

6.3

1995

4.7

1968

6.8

2010

5.7