1979

2.0

2002

6.8

1983

5.2

2001

5.1

1985

5.8

1987

6.9

1975

5.5

2019

6.9

2006

6.3

1990

6.6

1991

3.5

1999

6.5

1986

0.0

2015

5.9

1992

5.9

2018

6.5

2015

5.9

2022

6.4

2005

6.3

2004

4.9