National Strategic Indicators (NSIs) are used to measure the performance of local authorities at a national level and focus on key strategic priorities. They are collected by each local authority and a sample of the indicators were audited by the Wales Audit Office up to 2012-13. Each indicator is aligned to one or more of the Welsh Government's strategic priorities, and they have been chosen for their focus on outcomes. Local authorities are legally obliged to collect and publish data for each of the NSIs. Welsh Ministers have the power to set performance indicators and standards for Welsh local authorities, with the current set specified in the Local Government (Performance Indicators and Standards) (Wales) Order 2012. Local authorities also use these performance indicators, along with other indicators that they choose to use and a wider range of information, in order to plan and deliver improved services.