The edition I have of David Bronstein's tournament book Zurich 1953 (translated by Oscar D. Freedman and edited by Burt Hochberg) lacks a table that shows round-by-round cumulative score, so I created one. It's a JPG file about 630 KB and can be downloaded from
http://davidlevinchess.com/chess/Zurich_1953_cumulative_score.jpg .