1993

4.8

2005

5.8

1968

7.1

1970

6.5

2016

5.9

2018

6.9

1977

5.0

2011

7.5

1971

4.2

1999

3.3

1977

6.4

2023

7.0

1991

0.0

2014

4.7

0.0

2014

7.7

2014

6.2

2012

4.6

1984

5.6

2016

6.8