Sun's magnetic activity smoothly comes up and down every 11 years (see also http://en.wikipedia.org/wiki/Solar_cycle). Although a little bit delayed, the last maximum was in 2013. Hence Sun's activity will be lower in the next six years, finally coming up again till it enters its next maximum by 2024. Many dark spots on the Sun surface is an indicator of high solar activity.
Both photos are available for free download at: http://bit.ly/1oH5D0J and http://bit.ly/1xZID2l