I did the same last year, but must have posted it in chat, because I can't find my thread.
Anyhow, in 2015 animals accounted for 39% of all cards received in the Streep household, the highest category being birds:- Penguins (4) - in what appears to be an emerging trend, and robins also (4). This was closely followed by bears, with most, but not all, being polar bears. Other species featuring in the animal category were stags / deer and dogs.
Christmas characters is the second largest category (with Santa and snowmen both weighing at 6 cards each), representing 19% of all cards.
Snow scenes and foliage (wreaths or holly) each accounted for 14% of all cards received, and somewhat surprisingly, or not, cards with a religious theme was the lowest category, accounting for a mere 8% of all cards.
Snow scenes included houses, doors, and 2 post boxes. 'Other' includes a gingerbread man, some gloves, a sprout, and a bad piggy.
If I can find my source data for last year it would be useful to be able to comment on any changing trends.
It is definitely time for me to go back to work.