2003

7.1

2009

5.6

1998

7.2

2001

7.4

2020

6.1

1999

7.3

2006

5.2

2007

6.6

2005

6.9

2013

6.3

1989

7.2

1989

7.0

2006

6.1

2005

5.5

2000

7.4

2021

5.5

2005

6.1

2021

7.7

2004

7.0

2008

6.9