1997

7.1

1995

7.7

2021

8.3

1984

7.2

2015

7.3

2010

8.0

2000

6.9

2008

7.2

1989

7.5

2009

7.7

2010

6.2

2023

7.6

2005

8.5

2011

7.8

2019

7.6

1991

7.2

2021

7.9

2012

7.7

2006

9.3

2009

7.3