Thanks and congratulations on working out how to post ideas. We hope you enjoyed the activity. Thanks for sharing with the community.
Just as a tip, the site values a good description as much as it does a good chart so it is always a good idea to add a reasonable description to accompany your chart. Doesn't need to be long. Just a sentence or two describing what you are seeing on the chart. The system will be more likely to rank it higher and users will also be more likely to follow and comment on your ideas if there is some good accompanying analysis.