2003

4.5

2021

3.0

1999

5.3

1992

5.0

2010

5.9

2003

4.7

2005

4.9

1998

5.8

2023

9.0

1981

4.8

2013

4.7

2009

5.7

1968

1.0

2014

6.0

2013

4.8

2000

4.0

2014

0.0

1974

2.7

1988

0.0

2016

6.0