1999

7.3

2002

7.3

2006

7.6

2003

7.2

1997

8.3

1984

7.8

2005

8.6

2002

7.5

2006

0.0

2006

7.8

2017

8.1

2016

0.0

1988

6.0

1994

7.7

2000

6.1

1998

7.0

2021

7.4

2012

0.0

2005

7.4

1988

6.7