2003

5.3

2006

4.9

2008

5.2

1996

6.8

1994

6.6

1933

7.3

1936

8.3

2008

0.0

1960

6.6

1924

8.1

1998

7.7

1916

6.2

1994

6.8

2000

7.1

2015

6.9

1994

3.2

1992

6.2

1970

7.5

1961

5.6

2005

6.5