1998

4.1

2004

5.2

2003

5.0

2002

6.3

2017

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

2017

6.7

2016

4.3

2013

3.7

1977

6.3

2015

6.3

1997

5.5