1987

7.2

1977

5.9

1991

5.8

1982

5.2

1990

4.9

1980

4.8

2006

7.0

1987

4.3

1970

1.0

1980

5.1

2013

6.4

2013

2.6

2016

6.5

2016

5.4

1985

7.2

2006

0.0

2006

0.0

2010

0.0

1989

5.0

2020

1.0