We can identify a few major spikes
- February 16th - superfluid staking.
- March 2nd - Osmosis launches staking service in Cosmos
- March 21st - I could not find something correlated to the local maxima
- April 23rd - New Token listings + LP pair listings.
It seems the event that has brought it the largest amount of unique new active users was the March 21st event that I am unable to find much information about.
On the other hand, for the ones that I was able to find information on, these are pretty huge events. More specifically superfluid staking, allows users to get incredibly high yields on their LPs and it seems that the April 21st one may have brought in some popular tokens that users were looking forward to LP with.