1964

5.9

1978

5.0

2007

5.8

2013

4.8

2006

7.0

1979

7.8

1978

7.4

1984

2.0

1999

7.1

1987

6.8

1993

6.6

1961

0.0

1996

6.4

2020

0.0

2024

0.0

2024

0.0

1994

8.5

2004

7.5

1975

7.8

2002

4.4