1998

7.1

2002

7.7

2004

8.3

2011

8.1

1998

7.2

2016

9.8

2013

7.7

1999

6.9

1997

8.1

1996

6.9

2006

8.2

1998

7.6

2014

8.2

1986

7.7

2016

7.9

2016

7.4

2012

8.0

2023

7.8

2000

7.0

2009

7.3