1992

0.0

2007

7.7

1994

6.9

1990

4.1

1997

8.0

1976

0.0

2007

10.0

1999

5.1

2000

6.1

1996

3.8

2001

1.0

1997

6.0

2003

4.0

2004

4.8

2002

0.0

2016

5.2

1993

6.4

1992

0.0

1998

5.3

2007

6.0

2015

5.5

2018

6.0