2002

7.7

2004

8.0

2005

7.8

2007

7.7

2009

7.7

2014

7.0

1988

6.8

2006

5.2

2003

6.7

1993

7.8

1992

7.4

1994

6.8

1992

6.9

2014

5.0

1992

5.3

2003

6.3

2020

5.6

1998

6.0

2006

5.5

1994

6.5