Add note about 14-15 data

csadatavis/templates/plots.mustache

@@ -24,7 +24,7 @@
   <p>You can also filter the data based on meeting types by selecting a meeting type in the bar chart in the bottom right. You can select multiple meeting types by holding down Shift.</p>
   <div id="vis"></div>
   <h2>About the Data</h2>
-  <p>We started collecting this data in February 2017. Earlier meeting data, up to the 2015-16 academic year, was collected by going through meeting announcement emails that were sent out, so attendance data is not available and a few meetings are missing. Though a few meetings since then do not have attendance data as we forgot to record attendence.</p>
+  <p>We started collecting this data in February 2017. Earlier meeting data, up to the 2014-15 academic year, was collected by going through meeting announcement emails that were sent out, so attendance data is not available and a few meetings are missing. Though a few meetings since then do not have attendance data as we forgot to record attendence.</p>
   <p>The raw csv file for the data is available at the <a href="data/meetings.csv">following link</a>.</p>
   <h2>Code for this Webpage</h2>
   <p>This was generated in Python using the <a href="https://altair-viz.github.io/">Altair</a> plotting library. The source code for the script is released under the MIT license and available at the following <a href="https://github.com/ExcaliburZero/csa-data-visualization-altair">GitHub repo</a>.</p>