China and Russia present two unusual age structures. China's jagged pyramid results from a number of factors: mass deaths, social disruption, and the country's "one-child" policy, all of which affected the population structure. In Russia, the economic disruption following the breakup of the USSR dropped the TFR below 1.2 in 1999, although it had risen to nearly 1.6 by 2010 (a rise that slowed in 2011). India is the "youngest" country of the group, and even by 2050, the 0-4 age group will be virtually equal to the 5-9 group.