2016

6.7

2008

8.9

2009

5.6

2020

5.6

2017

5.9

2000

5.2

1993

4.6

1966

7.6

2008

6.8

2010

5.0

1985

6.2

2002

6.1

1928

7.3

1896

5.2

2009

6.8

2011

7.0

1971

7.8

2002

5.4

1968

7.0

2004

6.0