For the graph: add more data points (each quarter) and make the scale logarithmic with a linear mean overlay trend line.

Also, I can only see indication of growth from that one chart. How about some more data (different charts):

- What size is it in total, average of the objects?

- Bandwidth (transfer, compressed)?

- How much is cachable (repeat and static requests)?

- How much data duplication is there?

- How is the data change rate (by objects, by volume)?

- How are average volumes and bandwidth change by account (behavior trend)?

- etc..