2015

4.4

1989

5.9

1995

6.2

2007

3.2

2005

4.5

1998

5.1

2003

4.0

1997

6.8

1993

6.7

2013

3.9

2015

4.8

1998

6.0

1997

4.0

1999

4.8

1994

6.0