yes, two hand movements as opposed to three.
In many signing communities around the world particularly in the US, there was a parallel heated debate as to how to sign the years.
A lot of people signed the numbers individually, 2000-2009, but here in Ireland, things changed when we reached 2010. some still sign 2-0-10, others 20-10, but now there is still overlap. I'll post this question on FB and see what people have to say, then get back to here.
When it comes to speaking, I just say twenty thirteen.