1981

5.2

1997

4.5

1990

8.0

2021

6.0

1993

2.6

1992

0.0

2003

4.8

2014

7.5

2014

0.0

2002

6.5

1994

1.0

2011

0.0

1998

0.0

2007

6.0

2012

1.0

1994

7.0

2004

4.5

1999

8.0

2008

6.0

1971

6.4

2016

5.6

1979

5.9

2001

5.9

1982

6.1

2005

4.6

1988

6.7