2001

7.8

2005

6.2

2002

6.4

2014

6.0

2013

5.2

2008

6.8

1992

5.0

1991

5.8

1964

6.4

1989

6.0

2004

3.8

1940

5.0

2010

7.5

2013

0.0

1977

4.1

2016

7.9

2023

0.0

2022

10.0

2011

5.1

2011

4.0