1992

5.7

2000

7.6

2006

7.1

2004

7.3

2005

6.1

2001

7.2

2000

0.0

2005

8.0

1990

7.4

2007

8.7

2009

3.9

2003

3.5

2015

7.4

2002

7.9

2001

8.1

1993

7.1

1998

6.8

2002

8.1

1999

7.9

2012

6.6

2021

8.1