Decision No 786/2004/EC of the European Parliament and of the Council of 21 April 2004 amending Decisions No 1720/1999/EC, No 253/2000/EC, No 508/2000/EC, No 1031/2000/EC, No 1445/2000/EC, No 163/2001/EC, No 1411/2001/EC, No 50/2002/EC, No 466/2002/EC, No 1145/2002/EC, No 1513/2002/EC, No 1786/2002/EC, No 291/2003/EC and No 20/2004/EC with a view to adapting the reference amounts to take account of the enlargement of the European Union