2006

7.9

2003

8.2

5.8

1998

7.2

2004

8.3

1997

8.1

2001

7.6

2010

7.2

2004

8.6

1989

8.4

2015

7.5

1998

7.8

2014

6.4

1990

7.6

2008

7.3

2023

6.8

2021

7.7

2010

7.6

2015

6.9

2004

7.7