Date unknown Average per capita income in Japan exceeds that in the United States. The first commercially available 3D printer is sold. Informal stock trading is done in Shenyang, China; the first of its kind in Communist China. Opus Pro, a Latvian hard rock group, is established. The band Sweet Children (now known as Green Day) was formed by the lead singer, Billie Joe Armstrong. The Province of Flevoland is established in the Netherlands.
date unknOwn aveRaGe per CapitA iNCome In japan eXceeDs thAt in The UnITEd stateS. the fIRst cOMmERcIally avaILaBLe 3D printer IS sold. InforMaL stOck TRAdIng is doNe in sHenyang, China; ThE first of itS kind In comMuNIST ChiNa. opuS prO, A LAtviAN hARD ROck grOup, iS estabLiSHEd. ThE baNd swEet cHildrEN (now KnoWN as green day) WAs foRmed BY thE leaD SINger, billiE joe ArmSTroNg. The pRoViNCE OF fLEVOlAND is EstABLishEd in The netHerlANdS.