what is the best returning index fund in april 2013

DUST had the highest return in April 2013 by a major index or ETF, returning 60.6%.

ASSET MONTH % RETURN
DUST
April 2013
60.57%
TAN
April 2013
26.67%
EZJ
April 2013
24.76%
ZSL
April 2013
24.62%
DRN
April 2013
20.54%
LTL
April 2013
18.97%
GREK
April 2013
16.21%
DBJP
April 2013
14.86%
DXJ
April 2013
14.59%
ICLN
April 2013
14.25%
BIB
April 2013
14.22%
FJP
April 2013
14.14%
TMF
April 2013
13.72%
GLL
April 2013
13.44%
INDL
April 2013
12.54%
URE
April 2013
12.03%
EWJ
April 2013
11.85%
UPW
April 2013
11.46%
EWI
April 2013
11.25%
EWP
April 2013
10.72%
PBW
April 2013
10.37%
IYZ
April 2013
10.11%
DFJ
April 2013
9.85%
RETL
April 2013
9.44%
JPXN
April 2013
9.4%