Feels like an avalanche, the main difference being that in the case of a real avalanche, it eventually comes to a stop at the foot of the mountain. In WotC's case, there is NO mountain base to stop this insane amount of new product !
Your data shows an incredible progression in just 6 years... I knew it was bad, but not THAT bad! Honestly, in my case I find it overwhelming and I no longer get excited as I used to with the coming of new cards. There is so much to take in, I can't find the time to try and fit new cards in existing decks. I do however try to jot down those that are a great fit for an eventual purchase or trade.