The Widest Path for the year 2004 according to the GoGoD database. There are 1753 games in the database for this year, and the widest path shows a diagonal fuseki.
Black 1: 911 games. a was played 797 times; all other moves taken together 37 times.
White 2: 362 games. The main alternatives are all on 4-4: b (283 times), c (122 times), (86 times).
Black 3: 110 games. Only edges out very narrowly over d (108 games). c, and e were also played.
White 4: 70 games. Only major alternative is f (32 games)
Black 5: 65 games.
White 6: 37 games.
Black 7: This move as well as , g and all were played nearly evenly (9/8/7/7).
White 8: Again the 'extra game' made the decision, bringing this move at 4 games against 3 for g
White 10: In an attempt to get a longer widest path, the 'odd bird' is dropped again. This move was played twice, also twice (including the odd one out) we got h.
White 14: The final division, a and b had both been played once.