2003

5.5

1990

7.9

1999

7.6

2015

5.3

2020

7.3

2012

5.0

2010

4.0

2016

4.0

1996

7.4

1984

6.2

2023

7.0

2016

5.1

2022

5.0

2013

6.0

2017

6.0

2003

7.1

1980

5.4

2009

6.1

2008

6.7

1983

6.0