member countries  population  area (km square)  gdp (billion us)  gdp per capita (us)
0          belgium     9052707             30528            58.316                46878
1           france    44788852            674843           312.966                40690
2     west germany    54292038            248717           400.554                41168
3            italy    49476000            301336           265.192                30116
4       luxembourg      310291              2586             2.938               113533
5      netherlands    11186847             41526            83.351                50355
6       ec6 (1958)   169106736           1299536          1123.317                 6643

Table as JSON:
{"member countries":{"0":"belgium","1":"france","2":"west germany","3":"italy","4":"luxembourg","5":"netherlands","6":"ec6 (1958)"},"population":{"0":9052707,"1":44788852,"2":54292038,"3":49476000,"4":310291,"5":11186847,"6":169106736},"area (km square)":{"0":30528,"1":674843,"2":248717,"3":301336,"4":2586,"5":41526,"6":1299536},"gdp (billion us)":{"0":58.316,"1":312.966,"2":400.554,"3":265.192,"4":2.938,"5":83.351,"6":1123.317},"gdp per capita (us)":{"0":46878,"1":40690,"2":41168,"3":30116,"4":113533,"5":50355,"6":6643}}