I am looking to understand if there are any hard figures on which digital signature schemes are most commonly in use today.
I'm only really interested in what is employed recently (ie. last couple years), as opposite to what was adopted say ten years ago, and especially what's employed in systems in which the bandwidth is limited, hence the signature length needs to be short.
If you could include the figures and link the relevant sources, that would be excellent.
note: I know that last change to DSA happened in 2000, and up to 2004 it was still in use. Is it still in use in 2012?