A great summary of how the Wellcome Trust has helped drive big changes in open access publishing. Of the ten numbers that the post uses to summarise the last decade, this one surprised me the most:

20% – the volume of UK-funded research which is freely available at the time of publication
A recent study commissioned by Universities UK found that 20% of articles authored by UK researchers and published in the last two years were freely accessible upon publication. This figure increases to 24% within six months of publication, and 32% within 12 months.

If you had asked me to guess what this number would be, I think I would have been far too optimistic. Even the figure of 32% of articles being free within 12 months seems lower than I would imagine. Lots of progress still to be made!