1944

7.2

2002

5.8

1981

6.5

1949

7.7

1994

4.4

1921

6.6

1991

6.1

1988

2.0

1971

4.0

1964

5.5

1974

3.6

1994

5.5

2009

5.9

1995

6.1

1990

1.0

2004

3.6

2005

7.4

1955

5.7

1963

6.1

2012

7.1