Average number of junk email messages per week, per cent of persons having received of junk email, in spring 2007

Referencing instructions:

Statistics: Use of information and communications technology [e-publication].
2007, Average number of junk email messages per week, per cent of persons having received of junk email, in spring 2007 . Helsinki: Statistics Finland [referred: 14.2.2012].
Access method: http://www.tilastokeskus.fi/til/sutivi/2007/sutivi_2007_2007-09-28_kuv_013_en.html.