According to the latest PandaLabs report, malware creation hit a new milestone. In 2013 alone, cyber-criminals created and distributed 20 percent of all malware that has ever existed, with a total of 30 million new malicious strains in circulation, at an average of 82,000 per day.

http://www.net-security.org/malware_news.php?id=2737

Of course, a large amount of these "viruses" are script-kiddy idiots downloads off warez websites and most of those don't work properly. But even then, the remainder is a huge amount. I got a gut feeling the majority of these are coming from China, India and the Pacific Rim. I could be wrong.