There are several factors that can cause such event but I'm pretty certain it's not an HP system glitch or new google update since mine is steadily rising. I noticed that majority of your hubs are about programming particularly using the C language. Though this language is crucial in learning the basics of programming, only a few nowadays are interested to go deeper and focus their career on the C language. Try to feature infamous programming languages nowadays such as Joomla, Java, and PHP. Your views will surely improve.