At December 31, | |||||||||||||||||||||
2015 | 2016 | 2017 | |||||||||||||||||||
Shares | Amount | Shares | Amount | Shares | Amount | ||||||||||||||||
(in thousands, except for share data) | |||||||||||||||||||||
Ordinary shares | 59,166,741 | € | 1,183 | 75,030,078 | € | 1,501 | 80,024,707 | € | 1,597 | ||||||||||||
Converted to U.S. dollars at historical exchange rates | $ | 1,568 | $ | 1,923 | $ | 2,031 |