The index has been expanded in 2011 to include two additional countries; namely India and Poland.
These additions mean that the index now covers more than half the world’s population.
India was included as it is the second most populous country whereas Poland has the largest economy of the former Eastern Bloc countries in Europe.
These additions continue the theme of diversity represented by countries in the index. This highlights an important characteristic of the index as it is recognised that retirement income systems around the world have a wide range of design features and norms.