Delta Works was completed by the Europoortkering which required the construction of the Maeslantkering in the Nieuwe Waterweg between Maassluis and Hoek van Holland and the Hartelkering in the Hartel Canal near Spijkenisse. The works were declared finished after almost forty years in 1997. In reality the works were finished on 24 August 2010 with the official opening of the last strengthened and raised retaining wall near the city of Harlingen, Netherlands. Due to climate change and relative sea-level rise, the dikes will eventually have to be made higher and wider. This is a long term uphill battle against the sea. The
Tendency of the rate of profit to fall very large. The idea of supersized CEO pay has been disputed by the American Enterprise Institute who claim that the "average" CEO pay, according to BLS statistics, is more like US$220,000; only "a handful" would earn more than that. Profit income from ordinary land sales is excluded from official value-added, since land is not considered to be a "produced asset". (see gross fixed capital formation). Included in capital formation is only the value of certain land improvements which are excluded from investments in building & construction (land clearing, land reclamation, land drainage, irrigation works, flood barriers, contouring, creation of wells