2011

6.5

2010

4.6

2016

7.4

1997

6.0

2018

6.7

1986

7.6

1996

6.6

1990

5.8

2005

6.9

2001

4.3

2012

5.3

1917

7.3

2017

4.5

2003

6.7

2011

5.9

2011

6.2

2017

5.4

1990

6.1

2007

6.7

1990

6.1