I've gathered bipolar stats in the past, too, and am happy to share some, if you don't mind. Let me know if you do.

According to a 2002 study by Lewis L. Judd et al. published in the Archives of General Psychiatry, on average, people with Bipolar type 2 experience the whopping ratio of time in depression to hypomania as 40:1, while people with Bipolar type 1 on average experience time in depression to full blown mania as 3:1

Although bipolar disorder is equally common in women and men, research indicates that approximately three times as many women as men experience rapid cycling. (Journal of Clinical Psychiatry, 58, 1995 [Suppl.15]) Other research findings indicate that women with bipolar disorder may have more depressive episodes and more mixed episodes than do men with the illness. (Journal of Clinical Psychiatry, 58, 1995 [Suppl.15])

Children and Adolescents:
Bipolar disorder is more likely to affect the children of parents who have the disorder. When one parent has bipolar disorder, the risk to each child is 15 to 30%. When both parents have bipolar disorder, the risk increases to 50 to 75%. (National Institute of Mental Health).

In the past, I was curious to see whether bipolar type 1 is more common than bipolar type 2, or vice versa. I recall finding two separate stats on this that showed conflicting information. I tried to google this in several ways today and found no results. I do believe that in the long ago past that bipolar type 1 (with full blown manias) was likely more recognized as manic depression, but with the increased recognition of hypomania in recent decades, more people are being diagnosed bipolar vs. with only major depression. The whole bipolar spectrum concept is also changing some views further on how to label illnesses, and more properly treat patients.