According to Odaily, data from Dune indicates that the number of votes in Polkadot's monthly governance is trending towards a high level. During periods of low governance activity, the proportion of DOT used for voting relative to the total supply is approximately 32.65%. This proportion can reach up to 65.30% during periods of high governance activity. Although this data represents the total number of votes each month, including reused DOT, rather than the unique number of DOT participating monthly, it still reflects an increasing engagement in governance by DOT holders since the launch of OpenGov.