2003

3.9

2024

6.9

2005

6.1

2003

6.3

2023

8.1

2012

7.2

2006

7.1

2000

6.6

2007

6.8

1998

5.7

2013

6.8

1997

7.9

2021

7.8

2016

7.4

2004

8.4

2013

7.1

1997

8.4

1990

7.5

1999

8.0

2011

7.3