1988

0.0

2001

7.3

1994

6.1

2006

6.6

2018

7.5

1998

7.2

2016

6.9

1991

0.0

2013

4.7

2008

6.8

2004

5.0

1986

6.3

2016

7.2

1981

6.0

1999

6.8

2000

7.6

1996

5.9

2014

7.4

2020

6.1

2013

6.0