1999

7.4

2024

7.6

2015

8.2

2013

8.5

2008

8.9

2011

8.1

2004

8.3

2009

6.8

2019

7.4

2019

8.5

2004

7.9

1987

7.7

2010

6.7

2012

8.4

2021

7.8

2000

8.0

2010

8.6

2005

8.2

1988

6.8

2015

8.2