19 years, Russia

41 years, Lyubertsy, Russia

35 years, Russia

100 years, Russia

46 years, Singapore, Singapore

58 years, Kishinev (Chișinău), Moldova

24 years, Kazakhstan

52 years, Russia

Moscow, Russia

21 years, Russia

29 years, Russia

38 years, Russia

38 years, Russia

36 years, Cambridge, United Kingdom

36 years, Moscow, Russia

45 years, Voronezh, Russia

38 years, AFINI, Greece

46 years, Riga, Russia

40 years, Moscow, Russia

67 years, Russia