2018

10.0

2017

3.9

2000

2.9

1977

4.6

1987

3.1

1980

2.5

1983

3.4

1984

4.7

2012

2.0

1970

3.8

2017

5.1

1988

0.0

2007

6.5

2013

4.5

1983

5.0

1999

6.0

2019

0.0

2021

6.6

2014

6.1

1984

4.2