© Siemen s AG 201 3 All righ ts re se rve d . Pag e 4 How our world is chan ging – urbanization Growth of cit ies • 2009 : For the fir st time in hi st or y , mor e tha n 50p erc ent of manki nd liv es in ci tie s • 2050 : 70 pe rc en t of man ki nd will liv e in citi es Megac iti es worldwid e • 1975 : 3 mega ci t ies with mor e tha n 10 mill io n in ha bi t ant s • 2025 : 27 meg ac ities with mor e tha n 10 mill io n in ha bi t ant s; ab ou t on e pe rs on ou t of ten liv es in a meg ac ity Co mmuters in Ja karta