Ranking of world cities by GDP

A site titled City Mayors has the details of a study done by PriceWaterhouseCoopers which ranks world metro areas by each metro's GDP. Here is the ranking table from that research for the top 50:

Richest cities and urban areas in 2005

Rank	City/Urban area	Country	GDP in US$bn
1	Tokyo	Japan	1191
2	New York	USA	1133
3	Los Angeles	USA	639
4	Chicago	USA	460
5	Paris	France	460
6	London	UK	452
7	Osaka/Kobe	Japan	341
8	Mexico City	Mexico	315
9	Philadelphia	USA	312
10	Washington DC	USA	299
11	Boston	USA	290
12	Dallas/Fort Worth	USA	268
13	Buenos Aires	Argentina	245
14	Hong Kong	China	244
15	San Francisco/Oakland	USA	242
16	Atlanta	USA	236
17	Houston	USA	235
18	Miami	USA	231
19	Sao Paulo	Brazil	225
20	Seoul	South Korea	218
21	Toronto	Canada	209
22	Detroit	USA	203
23	Madrid	Spain	188
24	Seattle	USA	186
25	Moscow	Russia	181
26	Sydney	Australia	172
27	Phoenix	USA	156
28	Minneapolis	USA	155
29	San Diego	USA	153
30	Rio de Janeiro	Brazil	141
31	Barcelona	Spain	140
32	Shanghai	China	139
33	Melbourne	Australia	135
34	Istanbul	Turkey	133
35	Denver	USA	130
36	Singapore	Singapore	129
37	Mumbai	India	126
38	Rome	Italy	123
39	Montreal	Canada	120
40	Milan	Italy	115
41	Baltimore	USA	110
42	Metro Manila	Philippines	108
43	St Louis	USA	101
44	Beijing	China	99
45	Cairo	Egypt	98
46	Jakarta	Indonesia	98
47	Tampa/St Petersburg	USA	97
48	Pusan	South Korea	95
49	Kolkata	India	94
50	Vienna	Austria	93