2009 class - If you are from the 2009 class and have not attended one day of supplemental training since then, your listing has expired. In order to be re-listed you will be required to attend the entire 2016 series.
If you have attended a supplemental training each year since 2009, then you just need to come back one day each year to stay listed.
2010 class - Your three years expired in 2013. People that attended one day of the 2013 series maintained their listing for another year. If you did not attend one day in 2013 or the entire series in 2014 or 2015 you will need to take the entire series in 2016 to be reposted.
2011 class - You were not required to take any classes in 2013 to maintain a listing on the webpage, but you were required to attend one day in 2014, and one day each year thereafter.
2012 & beyond - From 2012 on, you are required to come back for one day of training each year, so plan to attend one day in 2014.