1975

5.5

1996

6.0

2012

7.8

2014

8.3

2009

6.6

2002

6.3

1990

7.7

1973

8.0

1998

7.9

1985

6.5

2004

7.6

1996

7.4

2022

6.5

1989

0.0

2004

8.5

2005

6.7

1976

6.8

2001

7.0

1994

10.0

1965

7.8