2014

4.6

1997

5.2

1991

5.5

1989

7.1

1996

5.4

1989

2.8

1987

5.3

2009

6.1

1984

6.9

1976

6.0

2004

5.1

2008

6.0

1992

5.2

2018

0.0

1993

5.2

2005

4.6

2024

7.2

2009

5.9

1991

6.5

2011

0.0