1983

8.7

1988

9.8

1979

7.5

1998

6.2

0.0

2019

5.2

2015

5.6

2001

6.8

2008

6.7

2008

6.3

2008

4.1

1993

6.5

1999

0.0

1999

4.4

2021

7.2

1982

6.6

2003

5.5

1999

7.3

1992

6.7

2007

3.9