South

America

Year

Spring

Summer

Fall

Winter

1999

0.5

1

0.3

1

2000

0

0

1

1.5

2001

0

0

1.7

1

2002

0.5

1

1.5

1

2003

0

1.5

1

2.5

2004

0.8

1.5

0.7

0

2005

1

0

2

0.5

2006

1

1

1

1

2007

0.5

1.5

0.7

1.5

2008

1.3

1.5

1

0.5

2009

0.5

1

0.3

1

2010

0.5

2

1

0

2011

0.8

0

1.5

1

2012

0.8

1.5

1.5

2.5

2013

0.3

1

0.3

0.5

2014

1.3

0.5

1

1

2015

6

3

1

0.5

2016

1.8

1.5

1

1

2017

0

0.5

0

0.5