21 million amiibo have been sold worldwide

Nintendo has sold 21 million amiibo worldwide, according to president and CEO Tatsumi Kimishima. This number indicates that around 10.6 million units were sold since March.

We also have some data specific to France. Journalist Chloé Woitier reports that over 800,000 amiibo have been sold in the territory thus far, including 70,000 cards.

Source, Source