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06/30/2011: $37124.39 07/31/2011: $37075.88 08/31/2011: $37187.23 09/30/2011: $37306.13 10/31/2011: $37295 11/30/2011: $37116.04 12/31/2011: $37130.76 01/31/2012: $37535.59 02/29/2012: $38316.23 03/31/2012: $37963.89 04/30/2012: $38544.5 05/31/2012: $38313.45 06/30/2012: $38324.98 07/31/2012: $38761.63 08/31/2012: $39009.78 09/30/2012: $39314.01 10/31/2012: $39329.91 11/30/2012: $39546.25 12/31/2012: $39526.37 01/31/2013: $39285.37 02/28/2013: $39383.6 03/31/2013: $39537.1 04/30/2013: $40177.76 05/31/2013: $39767.76 06/30/2013: $39727.99 07/31/2013: $39370.08 08/31/2013: $38773.56 09/30/2013: $38694.03 10/31/2013: $39290.54 11/30/2013: $39489.38 12/31/2013: $39579.78 01/31/2014: $39741.5 02/28/2014: $40428.79 03/31/2014: $40429.97 04/30/2014: $40511.56 05/31/2014: $40837.94 06/30/2014: $41079.86 07/31/2014: $40586.41 08/31/2014: $40545.29 09/30/2014: $40468.76 10/31/2014: $40427.59 11/30/2014: $40715.77 12/31/2014: $40612.44 01/31/2015: $40529.81 02/28/2015: $41232.16 03/31/2015: 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04/30/2009: $17544.25 05/31/2009: $17671.46 06/30/2009: $17771.91 07/31/2009: $18058.63 08/31/2009: $18245.61 09/30/2009: $18437.31 10/31/2009: $18528.37 11/30/2009: $18768.21 12/31/2009: $18474.77 01/31/2010: $18757.03 02/28/2010: $18827.05 03/31/2010: $18803.96 04/30/2010: $18999.71 05/31/2010: $19159.51 06/30/2010: $19459.96 07/31/2010: $19667.68 08/31/2010: $19920.71 09/30/2010: $19941.97 10/31/2010: $20012.93 11/30/2010: $19897.9 12/31/2010: $19683.34 01/31/2011: $19706.2 02/28/2011: $19755.51 03/31/2011: $19766.43 04/30/2011: $20017.38 05/31/2011: $20278.64 06/30/2011: $20219.24 07/31/2011: $20540.1 08/31/2011: $20840.2 09/30/2011: $20991.76 10/31/2011: $21014.36 11/30/2011: $20996.1 12/31/2011: $21226.87 01/31/2012: $21413.16 02/29/2012: $21408.28 03/31/2012: $21290.98 04/30/2012: $21527.07 05/31/2012: $21721.82 06/30/2012: $21730.34 07/31/2012: $22030.09 08/31/2012: $22044.51 09/30/2012: $22074.76 10/31/2012: $22118.18 11/30/2012: $22153.09 12/31/2012: $22121.55 01/31/2013: $21966.83 02/28/2013: $22076.98 03/31/2013: $22094.6 04/30/2013: $22318.22 05/31/2013: $21919.93 06/30/2013: $21580.92 07/31/2013: $21610.42 08/31/2013: $21499.89 09/30/2013: $21703.44 10/31/2013: $21878.89 11/30/2013: $21797.06 12/31/2013: $21673.87 01/31/2014: $21994.12 02/28/2014: $22111 03/31/2014: $22073.34 04/30/2014: $22259.67 05/31/2014: $22513.04 06/30/2014: $22524.67 07/31/2014: $22468.16 08/31/2014: $22716.22 09/30/2014: $22562.05 10/31/2014: $22783.78 11/30/2014: $22945.41 12/31/2014: $22966.87 01/31/2015: $23448.47 02/28/2015: $23227.99 03/31/2015: $23335.85 04/30/2015: $23252.12 05/31/2015: $23196.12 06/30/2015: $22943.2 07/31/2015: $23102.68 08/31/2015: $23069.51 09/30/2015: $23225.56 10/31/2015: $23229.41 11/30/2015: $23168.05 12/31/2015: $23093.18 01/31/2016: $23410.97 02/29/2016: $23577.04 03/31/2016: $23793.36 04/30/2016: $23884.69 05/31/2016: $23890.81 06/30/2016: $24320.08 07/31/2016: $24473.84 08/31/2016: $24445.85 09/30/2016: $24431.53 10/31/2016: $24244.65 11/30/2016: $23671.18 12/31/2016: $23704.56 01/31/2017: $23751.08 02/28/2017: $23910.71 03/31/2017: $23898.17 05/31/2017: $24267.96