% arara: indent: {overwrite: yes}
\documentclass[professionalfont, fleqn]{beamer}
\mode<presentation>
\usetheme{Warsaw}
\usetheme{CambridgeUS}

\usepackage{pgfplots}
\usetikzlibrary{arrows,shapes,positioning}
\graphicspath{{graphics/}}

\begin{document}
\frame
{
	\frametitle{Frame Title}
	\begin{tikzpicture}
		\begin{axis}
			[
				axis x line  = bottom,
				axis y line  = left,
				width        = 1.01\textwidth,
				height       = .63\textwidth,          % Adjusted
				ymax         = 93,
				ymin         = 27,
				ytick        = {30,40,...,90},
				xmax         = 1993,
				xmin         = 1967,
				xtick        = {1970, 1980, ..., 1990},
			]
			\node[anchor=west] at (axis cs:1968.5,89.5){%
				\textbullet\ Comment here about data
			};
		\end{axis}
	\end{tikzpicture}
}
