What do the numbers look like for Phantom Limb Pain?

In order to look at the prevalence of phantom limb pain, we obviously have to look through the numbers of amputations that occur.
Amputations that occur in the United States occur due to vascular disease, complications to diabetes, trauma and cancer.
According to a study conducted looking into the future projections of amputations, there were approximately 1.6 million in 2005 and a projected number of amputations greater that 3.6 million by 2050. The increase is attributable to the increasing numbers of older adults and the high number of older adults living with vascular disease.
In general, men are more likely than women to have a limb amputated for any reason.
Table 1 displays these values:

So why do these numbers matter and where do they fit with phantom limb pain?

According to one of the studies I researched, of the surgical amputations that occurred in the United States, approximately 70% of the patients experience phantom limb pain after the procedure.  Furthermore, and more significantly, 50% of the patients experience continued pain 5 years after the surgery.  

As we can see, the prevalence of phantom limb pain, and persistent limb pain, is a significant proportion of amputees, whose numbers are going to continue to grow into the future.  

References:
Bloomquist, T. (2001). Amputation and phantom limb pain: a pain-prevention model. AANA Journal, 69(3), 211-217.

Ziegler-Graham, K., MacKenzie, E., Ephraim, P., Travison, T., & Brookmeyer, R. (2008). Estimating the prevalence of limb loss in the United States: 2005 to 2050. Archives Of Physical Medicine & Rehabilitation, 89(3), 422-429.