documentclass[a4paper,12pt,oneside,notitlepage]{article}

usepackage{geometry}
usepackage{etex}
usepackage[latin1]{inputenc}
usepackage[T1]{fontenc}
usepackage{booktabs,dcolumn}
usepackage{setspace}
usepackage{bm}
usepackage{endnotes}

topmargin0.0cm   topskip0cm
headheight0.0cm  headsep0.0cm
textheight22.6cm textwidth16.51cm
footskip1.5cm    %parskip0.5cm
usepackage{longtable,tabu,}
setlength{parindent}{0em}
usepackage{csvsimple}
usepackage{lipsum}
usepackage{float}
usepackage{caption}
usepackage{adjustbox}

makeatletter
csvset{
    autobooktabularcenterlong/.style={
        file=#1,
        after head=csv@pretablebegin{tabular}{*{csv@columncount}            {c}}csv@tablehead,
            table head=toprulecsvlinetotablerow\midrule,
            late after line=\,
            table foot=\bottomrule,
            late after line=ifnumequal{thecsvrow}{20}{\midrule}{\},
            late after last line=csv@tablefootend{tabular}csv@posttable,
        command=csvlinetotablerow},
}
makeatother
newcommand{csvautobooktabularcenterlong}[2][]        {csvloop{autobooktabularcenterlong={#2},#1}}


DeclareCaptionLabelSeparator{tableNewline}{par}
captionsetup[longtable]{
    justification=centering,
    labelsep=tableNewline,skip=5pt
}

makeatletter
renewcommandfootnotesize{%
    @setfontsizefootnotesize@ixpt{11}%
    abovedisplayskip 8p@ @plus2p@ @minus4p@
    abovedisplayshortskip z@ @plusp@
    belowdisplayshortskip 4p@ @plus2p@ @minus2p@
    def@listi{leftmarginleftmargini
        topsep 4p@ @plus2p@ @minus2p@
        parsep 2p@ @plusp@ @minusp@
        itemsep parsep}%
    belowdisplayskip abovedisplayskip
}
makeatother
begin{filecontents*}{dataonev1.csv}
Sector Description;A in percent;B in percent;Number of C values
Technology ;2.649;4.852;5
Automobiles & Parts ;1.143;5.072;49
Personal & Household Goods ;0.786;2.27;4
Utilities ;0.756;3.606;51
Food & Beverage ;0.564;2.583;7
Oil & Gas ;0.563;4.001;53
Insurance ;0.45;5.309;25
Banks ;0.323;3.783;130
Index;0.299;2.543;158
Industrial Goods & Services ;0.243;2.504;41
Telecommunications ;0.194;5.09;57
end{filecontents*}


begin{filecontents*}{datatwov1.csv}
Sector;A in percent;B SD in percent;C in percent;D SD in percent;E in         percent;F SD in percent
Automobiles & Parts;4.93;4.93;0.5;0.5;1.14;5.07
Banks;0.64;0.64;0.08;0.08;0.32;3.78
Basic Resources;2.9;2.9;-0.75;-0.75;-0.14;3.41
Chemicals;0.2;0.2;0;0;0.06;3.04
Construction & Materials;;;-0.84;-0.84;-0.84;2.82
Financial Services;;;-0.25;-0.25;-0.25;1.78
Food & Beverage;0.56;0.56;;;0.56;2.58
end{filecontents*}


begin{document}
    setlength{parskip}{1,27ex plus 0,635ex minus 0,211ex}
    renewcommand{baselinestretch}{1.25}
    normalsize
    thispagestyle{empty}
    renewcommand{labelitemi}{$diamond$}  % Aufzählungssymbol in Listen

lipsum

begin{table}[H]
    centering
    begin{adjustbox}{max width=0.9textwidth}
        footnotesize
        csvautobooktabular[separator=semicolon]{dataonev1.csv}
    end{adjustbox}
    caption{dataone}label{tab:dataone}
end{table}

lipsum

begin{table}[H]
    centering
    begin{adjustbox}{max width=0.9textwidth}
        footnotesize
        csvautobooktabularcenterlong[separator=semicolon]{datatwov1.csv}
    end{adjustbox}
    caption{datatwo}label{tab:datatwo}
end{table}
end{document}