1993

6.2

2025

6.0

2013

6.1

2002

7.5

6.0

2005

5.7

2008

3.9

2002

8.3

1982

6.4

0.0

2015

6.0

1961

7.7

1980

7.2

2010

4.5

2001

6.9

1964

6.7

1985

5.9

2017

6.0