1958

6.0

2000

6.5

2002

6.4

1988

7.6

1993

7.7

2013

5.8

1992

7.5

2005

7.3

1989

7.1

2005

6.6

2012

7.8

2017

5.2

2010

7.2

2011

9.7

2008

6.5

1953

2.0

2018

0.0

2007

5.0

2014

6.5

1985

8.1