1989

6.0

1986

7.0

2006

7.1

2006

7.8

2004

8.0

1983

6.8

1999

6.7

1975

7.2

1992

7.0

2006

7.6

2009

0.0

2024

6.4

2020

0.0

2020

2.0

2019

6.0

2015

10.0

2017

0.0

1972

0.0

2015

0.0

2012

5.0