1998

4.1

2004

5.2

2012

1.0

2014

7.1

2017

8.0

1994

10.0

2003

5.0

2002

6.3

2001

4.0

2017

0.0

2025

0.0

1967

6.9

1975

3.1

2025

7.0

1991

7.4

1990

6.4

2014

6.4

2004

5.5

2013

6.3

2015

5.4