1960= NAOIKD
196(Delete Space)= NAOIKT
1970= NEFND
197(Delete Space)= NEFNT
1980= NAIND
198(Delete Space)= NAINT
1990= NIND
199(Delete Space)= NINT
2000= TWOUND
200(Delete Space)= TWOU
2001= TWOUN
2002= TWO*U
2003= TWRAOE
2004= TWOUR
2005= TWOIF
2006= TWOUX
2007= TWOUFN
2008= TWAIT
2009= TWAOIN
2010= TWEN
2011= TWOUFNL
2012= TWOUFL
2013= TWRAOEN
2014= TWOURNT