SPE Membership Statistics

The following visualizations provide some historic context since upstream investment (source: IEA) is one of the key factors affecting membership at the macro level.

Instructions:

To see an animation over time press the play button. The animation can be stopped at any time by pressing the stop button. Additionally, the graph for any particular year can be selected by clicking on the years below the graph.

Resizing:
The graph is designed to fill the entire width of your browser's window. It will resize when you expand or shrink your browser window. If you change the window size while the graph is animated, the blue, visible plot area will not change so you will need to resize the window again after the animation is finished.

Values:
You can find the values at any point on the graph by hovering your pointer over that location.

Tools:
There is a tools menu at the upper right of the graph which is visible when you move your cursor to that area. These tools allow you to capture an image of the graph, zoom (in, out, or continuously), pan, autoscale the axes for a single plot, reset the axes to the original values, turn on/off spike lines, turn on/off hover information and compare data on hover.