2000

6.4

1983

6.7

1987

7.0

2002

5.9

1998

6.3

1994

6.6

2002

7.0

2008

5.9

1986

6.8

1976

5.9

2014

0.0

2023

8.0

2018

6.9

1975

6.5

1978

7.5

2024

0.0

1971

7.1

2004

7.8

1986

6.7

2008

6.3