1993

7.4

2012

9.3

2005

9.7

2007

5.7

2017

5.9

2011

5.7

2004

5.9

1996

8.0

2002

4.7

2014

6.0

2021

10.0

2024

6.4

1980

5.3

2014

7.0

2017

4.9

1972

6.3

2013

6.1

1994

8.9