The 2004-2006 GMCC data have been provided by the global media agency group, OMD, unlike the data for earlier years which were supplied by Mediaedge:cia.

The 2004-2006 GMCC data have been provided by the global media agency group, OMD, unlike the data for earlier years which were supplied by Mediaedge:cia.

The more recent data also exclude outdoor which had been included in previous years. Unlike other media, there is an absence of standardisation in outdoor panel sizes which makes any comparison between countries potentially misleading. Costs for other media are based on the following spaces/time periods except where other sizes are indicated on the report tables:

Television	30 seconds
Newspapers	A4, black and white
Magazines	Page Colour
Radio	30 seconds
Cinema	30 seconds
Internet	Banner 468x60

Users of this data should take particular note of the target audience definitions. For example, in most countries “adults” will be defined as individuals that are over a certain age, perhaps 15 or 18. However, in some countries, the standard definition includes an upper age limit so, for example, the Canadian data are based on adults aged 25 to 54. Any narrowing of the audience definition will reduce the size of the audience and therefore increase the recorded cost per thousand figure.

The costs shown are after the deduction of negotiated discounts, but before the deduction of agency commission. The cost per hundred GRP (Gross Rating Point) figures have been calculated by dividing the cost per thousand figures by the relevant universe (population). The conversions from local currency to US$ have been carried out using exchange rates at the mid-point of the relevant year.