Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In the light of models of composition of government expenditure and economic growth and the growing globalization process, we infer that countries should tend to a similar structure of government spending over time. In fact, using Tukey box-plots and σ-convergence we show evidence of an approaching process in the composition of government expenditures in OECD countries for the period 1970--1997. We also identify by means of cluster analysis that most countries are converging towards two different models: one including twelve European and non-European countries and the other composed solely of eight countries of the European Union.