1999

6.4

1980

5.1

2005

6.4

2006

6.3

1990

6.7

2023

6.5

1975

5.5

1999

6.5

2023

0.0

1987

6.9

1981

0.0

1981

0.0

1994

4.1

1992

6.0

2014

5.2

2009

6.6

1982

0.0

1980

6.6

1996

3.5

2005

6.3