1989

6.5

2017

6.1

2014

2.9

1994

5.6

1992

6.4

1980

4.6

2007

7.5

1996

6.7

2014

6.7

2007

6.1

2008

7.7

2022

0.0

2005

5.1

2004

4.1

2011

3.3

2017

5.0

1970

5.3

2005

6.3

2007

5.2

1999

6.0