我希望能够正确对齐最后一列，因为在结尾处存在额外的空间。请告诉我如何做到这一点。谢谢。
\documentclass[11pt]{article}
\usepackage{setspace} %double spacing and spacing in tables
\usepackage{amsmath} %equations etc. in latex
\usepackage[capposition=top]{floatrow} %so that the caption for figures appear at the top
\usepackage[tablename=TABLE,figurename = FIGURE,labelsep=newline,aboveskip=0pt,font=bf,justification=centering]{caption} %so that caption looks cool
\usepackage{booktabs} %midrule etc. which adds space around lines. Make tables look good.
\usepackage{tabularx} %use tabularx environment for creating one page tables
\usepackage[margin=1in]{geometry} %defining the margin for the page
\usepackage[autostyle]{csquotes} %for quotes. alternative would be " and "
\usepackage[table]{xcolor} %rowcolor, cellcolor, color for references
\usepackage{pdflscape} %landscape and keep the pages straight
\usepackage{everypage} %For AddEveryHookPage
\usepackage{hanging} %For references
\usepackage{longtable} %For multiple pages
\usepackage{multirow} %Valuable package as can be seen from table 5,8, and 10
\usepackage{graphicx} %created line using this package
\usepackage{bm} %bold and italics in the math enviornment at the same time
\usepackage{dcolumn} % a package actually used in this example
\def\hang{\par\noindent\makebox[1.5em][l]{ }\hangindent1.5em} %hanging indent
\makeatletter
\setlength{\@fptop}{0pt} %to make tables and figures start at the top of the page
\makeatother
\newcommand{\Lpagenumber}{\ifdim\textwidth=\linewidth\else\bgroup %to correct the page numbering for landscape pages
\dimendef\margin=0
\ifodd\value{page}\margin=\oddsidemargin
\else\margin=\evensidemargin
\fi
\raisebox{\dimexpr -\topmargin-\headheight-\headsep-0.5\linewidth}[0pt][0pt]{%
\rlap{\hspace{\dimexpr \margin+\textheight+\footskip}%
stabu \llap{\rotatebox{90}{\thepage}}}}%
\egroup\fi}
\AddEverypageHook{\Lpagenumber}% %to correct the page numbering for landscape pages
\newcolumntype{Y}{>{\centering\arraybackslash}X} %to center the columns for tabularx environment
\newcolumntype{Z}{>{\centering\arraybackslash}p{0.75in}} %to center the columns for tabularx environment
\newcolumntype{K}{>{\centering\arraybackslash}p{0.3in}} %to center the columns for tabularx environment
\newcommand{\gmc}[3]{\multicolumn{#1}{@{}#2@{}}{#3}} %short form for multicolumn
\doublespacing %make lines double spaced
\begin{document}
\setcounter{page}{-1} %start numbering at page 3 (2 - n where n = -1)
\thispagestyle{empty} %suppress page number
\begingroup % keep any font size changes local to group
\captionof{table}{\textbf{Descriptive Statistics}}
\singlespacing
\footnotesize
\centering
\setlength\tabcolsep{3pt} %default
\renewcommand{\arraystretch}{1}
\begin{tabularx}{\textwidth}{@{\extracolsep{\fill}}l*{2}{c}}
\gmc{3}{l}{\textbf{Panel A: Sample Representation across Economic Sectors}} \\\midrule
\textbf{Sector} & \textbf{N} & \textbf{\% Frequency} \\\midrule
Energy & 524 & 1.65\% \\
Materials & 2,648 & 8.34\% \\
Industrials & 5,905 & 18.60\% \\
Consumer Discretionary & 5,549 & 17.48\% \\
Consumer Staples & 2,174 & 6.85\% \\
Health Care & 5,167 & 16.28\% \\
Financials & 0 & 0.00\% \\
Information Technology & 9,774 & 30.79\% \\
Telecommunication Services & 0 & 0.00\% \\
Utilities & 0 & 0.00\% \\\midrule
Total & 31,741 & 100.00\% \\\midrule
\end{tabularx}
\endgroup
\end{document}