2009

6.5

2016

6.7

1985

6.2

1976

6.6

1977

6.2

2007

7.0

0.0

1996

4.4

1971

5.2

2017

0.0

2007

7.6

2021

4.0

1987

6.0

2000

7.7

2006

4.0

1990

5.5

2006

5.8

1981

6.4

1993

4.3

2024

2.9