2004

8.1

2009

3.0

2013

4.0

1997

6.4

2018

3.7

1998

7.0

2015

5.2

2005

8.0

1987

7.8

2013

7.0

2007

7.5

2013

2.5

1976

4.5

1991

6.6

2006

8.4

1997

8.1

1998

7.8

1998

10.0

2016

5.5

1970

6.0