1924

8.1

2005

6.9

1928

0.0

1962

6.9

1981

5.9

1969

6.0

1995

6.3

1979

6.8

2006

6.5

1986

4.7

1962

6.7

1986

7.1

1978

6.2

1997

5.6

2008

6.5

2003

6.5

2004

6.6

1994

6.0

2009

6.8

1980

7.3