It could be that 'golang' is not popular enough for statistical comparisons to be insightful. For a chuckle, look up 'golang' on Google Trends and then add the second term 'perl'.
http://www.google.com/trends/explore#q=%2Fm%2F09gbxjr%2C%20%...
1. http://www.google.com/trends/explore#q=%2Fm%2F09gbxjr%2C%20%...