Between 1990 and 2002 the number of teenage girls in the USA getting pregnant dropped by 25.6%. During the same period the number of teenage abortions dropped by 40.9%. If we assume that the percentage of girls who abort in responce to an unwanted pregnancy is roughly stable then we can assume that the number of unwanted teenage pregnancies has plumitted by approximately 62% during this period.

The notable exception to this trend is in the hispanic community where teenage pregnancies have jumped by 26.2% with the number of terminated pregnancies raising by only 15.7%. The majority of teenage hispanic girls getting pregnant are in the 18-19 (62.3%). This suggests that 18-19 y.o. teenage hispanic girls are choosing motherhood as their career of choice. Where as non Hispanic girls, for whatever reason, are choosing to delay their pregancy until their 20's.

Source CDC