25 years
20 years, Rostov-on-Don, Rostovskaya oblast′
35 years, Samara, Samarskaya oblast′
16 years, Tula, Tul′skaya oblast′
19 years, Дзержинск
31 years, Lipetsk, Lipetskaya oblast′
20 years, Nizhny Novgorod, Nizhegorodskaya oblast′
20 years
41 years, Ростов-на-Дону