1939

6.0

1969

7.0

1993

3.8

1940

5.5

2017

4.5

2017

5.9

2017

6.0

2006

6.6

2003

4.8

1958

6.8

2000

6.3

2007

5.4

2001

6.6

2009

5.8

1994

6.8

2006

6.8

2002

6.5

1984

5.6

2003

5.6

2008

5.2