* Crosscountry (nordic) ski
First XC trail was mapped in february 2006, the biggest effort was made during march 2011, with more than 1200 km mapped in a week.
* Alpine (downhill) ski
The first slope was mapped in february 2006 too, however the rise seems to flatten on the last years. Here 2009 is the best millesime.
* Aerialways (lifts)
It seems that aerialway mapping is less seasonal.
* And then
These three plots tend to grow at a steady pace, or even flattens a little.
We can probably understand this by the difficulty to map more remote pistes : it's time to improve the skiing level of our fellow ski-mappers :)
However, until they become really flat, one thing is sure: there is still plenty to map !