Very interesting, and another analysis tool that Playmobil should be using.
We can see the pre-Christmas boost in activity each year, and occasional bumps due to release of financial information or product recalls.
If you do similar search on Mattel, it reveals that Mattel is NOT a term people search on much until there's a product recall. Playmobil, Lego and Fisher Price are recognised brand names, but Mattel is not, it's a manufacturer,and people will search on a particular product line.
A search on Barbie is interesting, the Christmas bump is not nearly so pronounced, but growth rate seems higher.