1998

6.0

2013

6.5

2012

9.7

2002

4.6

1984

9.2

1993

6.6

2016

7.4

2011

7.4

1985

7.2

2009

5.3

1988

6.2

2000

6.0

2023

5.8

2008

5.8

2014

6.9

1981

6.6

6.2

2004

7.1

2003

6.3

2014

5.7