Don't know and I am not going to purchase that lake map to find out.
The satellite image layers just state 2012 and 2014.
It has been indicated that more years can be made available, would have to request that for that location so it is included. The map layers are individual purchases with the contour mapping. You can choose a USGS map, several years of satellite overlay, and Smartstrike as part of the purchase or all of them.
I do have a unit that will read the layers though.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, 360, RC-1