Animated bubble chart. Each bubble is one Philippine province. Use Left and
Right arrow keys to scrub years; Home and End jump to the first and last
year. Tab through the controls below the chart to change story, step year,
choose a year to compare against, toggle the X axis, change bubble color
and size encodings, search provinces, download CSV or an image, or copy a
shareable link. On a touch screen, pinch the chart to zoom the bubbles;
with a mouse, hold Ctrl and scroll. A text version of the current view
is below the chart.