Only 6.3% of the population has A Negative blood. Because your blood is rare, it is important to maintain sufficient supplies for our community and local patients. Your regular and frequent blood donations are especially valued, and many in our area will be given a fighting chance at life because of your generous gift. 1 in 16 people have A- blood (approximately 6.3% of the population).
Blood type distribution by country – Wikipedia https://en.wikipedia.org/wiki/Blood_type_distribution_by_country