We have been tracking CCA election voting participation since 2005. In those years when an election was necessary (rather than candidates being unopposed), the following shows the membership percentage of voters.

2007 434 ballots received; 18% of membership
2009 275 ballots received; 14% of membership
2010 154 ballots received; 9% of membership
2011 321 ballots received; 19% of membership
2013 116 ballots received; 8% of membership
2014 229 ballots received; 15.3% of membership
2016 186 ballots received; 13.4% of membership
2018 210 ballots received; 16.4% of membership
2021 247 ballots received; 24% of membership.