1980

4.7

1896

7.1

1968

6.3

2008

0.0

2010

5.7

1995

6.3

2008

3.0

1989

7.0

2014

7.4

1912

5.2

2009

7.2

2012

6.8

2006

5.8

1991

6.8

2014

4.0

1976

7.3

2014

0.0

1969

6.4

1964

6.6

1916

6.6