The diagram below illustrates the UK immigration, emigration and net migration during 10 years from 1999 to 2008.

The provided 1combined line and bar chartline graph and bar chart delineate the trends in long-term international migration to and from the United Kingdom over a ten-year period from 1999 to 2008. The 2chartdata details immigration and emigration figures in thousands, alongside the resulting net migration. Overall, it is immediately apparent that immigration numbers consistently exceeded those of emigration throughout the decade, resulting in a 3consistentlyperpetually positive net migration. While both inflow and outflow exhibited an overarching upward trajectory, net migration was characterized by significant volatility, peaking in 2004 and 2007. 4Regarding the specific movements, immigration began at approximately 450,000 in 1999 and experienced a steady ascent to reach a 5peak of just under 600,000 in 2004zenith of nearly 600,000 in 2004. Following a slight dip, figures recovered to 6reach an even higher peak of around 600,000 in 2006match this peak in 2006 before 7remaining close to 580,000stabilizing at just under 600,000 for the remainder of the period. In contrast, emigration started lower, at 8just under 300,000roughly 300,000, but followed a similar progressive climb, reaching 400,000 in 2006. Notably, after a sharp decline in 2007 to around 350,000, emigration surged to its highest point of approximately 420,000 in the final year. Net migration, derived from the difference between these two metrics, remained relatively static at roughly 150,000 from 1999 to 2003. However, 2004 witnessed a dramatic spike to 250,000, driven by the surge in arrivals. This was followed by a two-year decline, before a secondary peak of roughly 230,000 in 2007. The period concluded with net migration falling back to approximately 160,000 in 2008, mirroring the levels seen at the start of the decade.