Statistics on ADP Testing and Compliance

[Guest kp]

Can anyone point to a good source for statistics on how plan sponsors are complying with their ADP tests? For example, what percentage of sponsor meet the ADP test by posing a dollar or percentage limit on HCEs in the beginning of the year? What percentage wait 'til the end of the year to give HCEs back their deferrals that are in excess of the ADP limit? What percentage cut back during the middle of the year (in October restrict HCEs who are contributing above a certain ADP from deferring any more through the end of the year.