2003

6.2

2020

7.0

6.1

2013

6.1

2021

5.7

2023

6.3

2017

4.9

2004

6.0

2008

5.7

2006

6.1

5.4

2013

8.1

1975

4.9

2014

5.6

1985

3.5

2014

7.3

2013

6.1

1992

6.9

1989

5.2

1968

6.5