1988

5.3

1973

6.1

2008

4.5

1989

5.5

1988

6.3

1989

6.4

2003

7.7

1998

6.2

2011

5.4

2007

6.3

2016

6.3

2005

7.5

2009

4.7

1979

6.5

1985

6.7

2013

2.7

2009

6.0

2018

6.7

1988

4.3

1978

0.0