2011

6.0

7.8

1988

5.5

2001

9.9

1989

5.8

2014

6.7

2013

6.8

2012

9.7

2015

5.7

2020

9.4

2001

6.8

2011

9.7

1985

6.1

1972

6.6

2017

4.7

2008

7.4

2014

6.8

1991

7.0

1993

6.6