1981

5.9

2001

6.9

2002

6.7

2004

6.4

1994

6.1

2023

5.5

2000

5.3

2007

5.6

2006

6.6

2003

6.8

2010

2.5

2019

0.0

2013

6.4

2002

3.6

2014

6.0

1992

4.5

1957

4.7

2011

4.7

2025

6.3

2019

4.4