2004

6.4

1996

8.0

1975

5.8

1990

9.0

2018

5.6

2014

3.1

2019

7.8

2007

6.1

1964

0.0

2005

7.4

2009

6.1

1995

7.6

2006

7.8

2005

6.3

1976

4.7

1954

6.3

2008

6.0

1928

0.0

2014

6.9

2008

4.9