\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}
\usepackage{datatool}
\usepackage{datapie}

\begin{document}
\begin{preview}
    \DTLloaddb[noheader,keys={Group,Tax,TaxValue}]{myDB}{tax-revenue-de-2012-09.csv}
    \DTLdisplaydb{myDB}
\end{preview}
\end{document}
