The figure shows the contribution of the various subsectors to the direct economic key figures. Hydraulic Engineering /Dredging creates a very high indirect employment and value-added, due to the nature of the activities that include a high degree of subcontracting. Since 2019, several merchant shipping subsectors, including bulk and container, have seen overcapacity turn into undercapacity, which has caused freight rates to rise considerably. Thus, the value-added of merchant shipping rose by 84% between 2016 and 2020.