ZWOLLE, NETHERLANDS - APRIL 25: King Willem-Alexander and Queen Maxima of The Netherlands take part in celebrations marking the 200th anniversary of the kingdom on April 25, 2015 in Zwolle, Netherlands. (Photo by Michel Porro/Getty Images)
ZWOLLE, NETHERLANDS - APRIL 25: King Willem-Alexander and Queen Maxima of The Netherlands take part in celebrations marking the 200th anniversary of the kingdom on April 25, 2015 in Zwolle, Netherlands. (Photo by Michel Porro/Getty Images)