We consider the sectoral composition of a country's GDP, i.e. the
partitioning into agrarian, industrial, and service sectors. Exploring a simple
system of differential equations we characterize the transfer of GDP shares
between the sectors in the course of economic development. The model fits for
the majority of countries providing 4 country-specific parameters. Relating the
agrarian with the industrial sector, a data collapse over all countries and all
years supports the applicability of our approach. Depending on the parameter
ranges, country development exhibits different transfer properties. Most
countries follow 3 of 8 characteristic paths. The types are not random but show
distinct geographic and development patterns.Comment: 7 pages, 4 figure