This article describes how to go from chart like this which shows overall perference for various colas:
... to a chart showing trends in cola preference over time, in this case interview date:
- Go to Visualization > Time Series.
- Check the Show legacy visualization box in the lower left-hand corner
- Select Small Multiples with Tests for Trends and click on the page where you want to put your chart
- In the Rows box, select the variable you want, in this case Preferred cola
- In the Date/filter question box, select a date variable, in this case Interview Date
The results are as follows: