2002

5.9

2013

5.5

2021

6.4

1988

7.1

2007

6.9

2004

5.0

2008

6.4

2002

5.4

2009

6.0

2002

6.1

1995

7.3

1993

4.4

2005

6.2

2004

6.2

1998

7.2

2016

8.6

1990

5.5

1997

6.5

1985

6.3

1988

6.8