1929 to 1929 are the twenties, 1930 to 1939 are the thirties, then we have the fourties, fifties, sixteis, seventies, eighties, ninties, and er......
As far as I remember, people weren't sure what to call 2000 to 2009. The only name people use are 'the noughties' and I've seen lots of TV shows referring to how horrible a decace the 'noughties' have been, but I think lots of people are still uncomfortable with the phrase.
What about 2000 to 2010 to 2019? Is it the 'teenies', or the 'tenns'?
I don't know what this decade should be called ... or indeed what it will be called.