original: However the registration law changed in 2006 and since March 2007 official vehicles have got standard number plates.
simplifications: The registration law changed in 2006.  Since March 2007, official vehicles get standard number plates. The registration law changed in 2006. Since March 2007 official vehicles have got standard number plates. The registration law changed in 2006 and since 2007, official vehicles use standard plates. The registration law changed in 2006. Since March 2007 official vehicles have standard number plates. However, the registration law changed in 2006. Since March 2007, official vehicles now have standard number plates. However the registration law changed in 2006. Since March 2007 official vehicles got standard number plates. Since March 2007, official vehicles have had standard number plates. The registration law changed in 2006 and official vehicles have got number plates since March 2007. The registration law changed in 2006. Since March 2007 official vehicles have standard number plates. Official vehicles have not gotten standard plate numbers since 2006 because of the change of registration law in 2006.