Passage: In 2002, McCartney married Heather Mills, a former model and anti-landmines campaigner. In 2003, the couple had a child, Beatrice Milly, named in honour of Mills' late mother, and one of McCartney's aunts. They separated in April 2006 and divorced acrimoniously in March 2008. In 2004, he commented on media animosity toward his partners: "[the British public] didn't like me giving up on Jane Asher ... I married [Linda], a New York divorcee with a child, and at the time they didn't like that".

Question: In what years did McCartney and MIlls separtate?
2006