2004

7.8

2007

7.9

2012

6.2

1998

7.1

2003

7.0

2003

7.7

1989

8.3

1982

7.9

2009

6.6

2004

8.2

1984

7.5

2004

8.0

2005

7.1

1996

7.1

2017

7.6

1994

7.6

2003

7.9

2004

7.3

2002

8.3

2010

6.9