Despite unprecedented, strong, and consistent economic growth under his leadership, Toledo dealt with much labor unrest during his presidency as workers demanded higher wages and the fulfillment of campaign promises. The crisis underlined a basic flaw in Peru's economy as pointed out by "The Economist", which noted that "some 70% of output falls within the grey or "informal"" economy, and thus escapes tax. Tax-collections, at below 12.1% of GDP, are stagnant, with most coming from a handful of large, formal companies. Evasion is widespread, particularly among better-paid independent professionals." Tax collections by Toledo's government could simply not cover the wages that had been promised to civil servants.