ZenithOptimedia has released its latest global ad expenditure report, predicting spend will remain stable at 3.5% for 2013, the same growth rate the company forecasted in June of this year, marking the first time since mid-2012 that the report has not been downgraded from original expectations.

Globally, ZO predicts growth will increase in 2014 and 2015, at 5.1% and 5.9%, respectively. This, according to the report, is due to the European market getting healthier and taking the brakes off global growth.

Canada is forecasted to remain in its #9 spot on the global top ten ad market list, with $11.4 billion in 2012. Ad spend in the country is forecasted to grow to $12.8 billion for 2015.

Internet remains the fastest growing medium, predicted to grow 16% per year from 2013 to 2015. Display is the fastest growing sub-category for the medium, with 20% annual growth, thanks in part to the rapid rise of online video and social media advertising, which are growing at rates of 25% and 33% per year respectively.