1998

7.2

2008

8.3

2000

6.1

1972

6.9

2015

7.3

2009

7.5

2004

8.1

2021

7.0

2013

7.7

2005

8.9

2023

8.0

2018

4.7

2023

6.3

2016

7.2

2001

6.6

2010

6.9

2004

8.3

1999

8.0

2004

8.6

2008

8.3