1990

6.0

2004

7.9

1989

6.6

2000

7.7

2016

6.9

1990

0.0

2005

8.2

1985

6.5

2010

7.8

1998

6.0

2017

6.9

1986

7.1

2015

7.5

2005

7.5

2009

7.5

1990

7.2

1995

5.2

2017

8.5

1997

4.5

1990

6.9