1969

5.5

1996

5.8

2007

8.1

2023

0.0

1997

6.6

1989

5.9

1979

5.7

2008

4.2

1980

5.0

2014

4.6

2016

5.7

1999

7.2

2009

5.5

2020

5.0

2002

0.0

2021

6.0

2017

7.7

2014

0.0

2010

8.0

2011

7.0