, December 00, 0000. "Of the 0,0 million articles included in the analysis, 00.0% could be uploaded [with publisher permission] either as an accepted manuscript or publisher version to an institutional or subject repository after one year of publication....With previous studies suggesting realized green OA to be around 00% of total annual articles the results highlight the substantial unused potential for green OA....The threshold for making a green OA copy available voluntarily is in such cases low, but what remains to be aligned is author attitude." 