1982

5.1

2001

5.1

1993

5.0

1999

6.3

2009

5.5

1981

6.0

2023

6.0

2005

5.2

2010

5.5

1984

6.1

2006

4.4

2010

3.5

1995

7.0

2015

4.0

2003

5.5

2005

7.1

2017

5.8

2004

6.6

2003

6.7

2019

4.0