2004

6.9

2003

7.2

1965

6.1

2007

3.1

1994

6.9

1976

6.0

1988

6.8

1948

6.6

1943

6.0

1945

1.0

1968

6.2

1969

6.4

1948

4.7

1960

7.5

1932

5.5

1967

6.6

1964

6.6

1960

5.0

1941

5.8

1979

6.1