extended in a northwesterly direction as a part of Brødemose Sund into Kattegat. (The land is rising by 9 millimeters every year in , the northeastern part of Skellefteå Municipality, north of Kvarken.) Because of the mobility of the sand dunes, forests have been planted along the coast of Kattegat in the municipalities of Helsingør, Gribskov, and Halsnæs. For the purpose of a road and rail connection to Øresund Bridge, land has been added to the island of Amager, which has a tunnel connecting it with the artificial island Peberholm just south of the island of Saltholm. The land area of east Denmark (east of the Great Belt strait) is approximately 9,622 km2 (3,715 sq mi), which is set to increase due to housing projects in the north of Copenhagen Municipality, and also due to new bridges and tunnels being added, including the Fehmarn Belt Fixed Link and other traffic infrastructure projects. A new high-speed train line called the Copenhagen-Ringsted Line came into operation on 1 June 2019 to increase transport capacity and relieve congestion in Roskilde and the narrow 9-9.5 mile isthmus between Roskilde Fjord and the bay of Køge Bugt. It does this by moving international and national train traffic to the new train line and only keeping local and regional traffic. The primary function and largest expenditure, which takes up around 90% of the budget of the Capital Region, is owning and operating the hospitals and health services of the region. In the east of Denmark, there is one traffic region covered by the public transport agency Movia, which is owned by the Capital Region of Denmark and Region Zealand, and operates in 45 of the 46 municipalities. Because of its remote location, Bornholm has its own traffic company, , also known as BAT. Likewise, in the east of Denmark, the two regions and 45 of the 46 municipalities make up one sole employment region, with Bornholm being its own employment region. Bornholm also performs other tasks that are normally performed by the regions in the rest of Denmark. The municipality of Bornholm is therefore called Bornholm Regional Municipality. In some respects, the island forms a region of its own. As Denmark is a unitary state, its "capital region" is not a capital district, but merely one among several regions of Denmark that happens to contain the national capital. The region does not include the Ertholmene archipelago