2001

6.9

1996

7.1

1993

5.5

2010

4.3

1967

5.5

1995

7.2

2013

4.5

2025

5.0

1989

7.0

1999

0.0

2007

0.0

1981

8.1

1991

7.5

2014

8.4

2015

5.0

2019

6.5

2011

6.7

2003

10.0

2010

7.8

1976

7.3