2005

7.2

1959

8.1

1998

6.6

2009

6.1

1968

6.2

1974

5.4

1977

6.5

1964

6.3

1952

5.9

1952

6.7

1999

5.7

1941

6.2

1996

4.9

1921

0.0

1925

0.0

2003

5.2

1956

6.9

1935

4.5

2006

5.6

1993

6.7