The net migration graph for 2005 shows some interesting developments. Although you need to correct these numbers for population (e.a Lithania still comes first if we were to look at the number of net migrants per 1000 inhabitants, Austria is also an interesting case on the other side of the spectrum).
The Netherlands is the only country in Western Europe where emigrants outnumber immigrants. In 2005, an unprecedented 121 thousand persons left the country. Immigration totalled 92 thousand persons. Such a large negative netmigration is found nowhere else in Europe.
Emigrants outnumber immigrants since 2003
For decades, the number of people who came to settle in the Netherlands outnumbered those who were leaving the country permanently. This situation changed in 2003, when emigrants outnumbered immigrants for the first time. There seems to be no end to the emigration increase in the foreseeable future. In the first quarter of 2006 29 thousand persons left the Netherlands, 5 thousand more than in the same period one year previously and the negative net migration trend appears to continue and grow.
Of course details matter, while most people migrating fall in the 20-30 category there are some other trends. Some emigrants are getting older. This trend started in the 90´s as well.
Emigrants more often older people
Emigration increased in all age groups, but has particularly grown among older people. The population is ageing and the number of older people who consider emigration is also on the increase. The amount of emigrants over the age of 55 increased from 6 thousand in 1995 to 10 thousand in 2005. Spain and France in particular are popular destinations among older people. The majority of emigrants, however, are in their twenties and thirties.
source: Statistics Netherlands