PBS reported these numbers from a variety of sources:
http://www.pbs.org/pov/offandrunning/fact-sheet/
One of those sources stated that there are "2 million infertile couples actively trying to adopt." This does not include other individuals and couples who also want to adopt.
Some other interesting statistics from Good Housekeeping:
http://www.goodhousekeeping.com/life/parenting/a35860/adoption-statistics/
If you want to pore through mounds of data on your own, the US government provides a variety of fact sheets:
https://www.childwelfare.gov/topics/systemwide/statistics/adoption/
At least in the United States, there are many people looking to adopt children and because Russia has eliminated adoptions and China cut back, there are fewer out-of-country options.
people who want to adopt dont necessarily mean people who want to adopt a child at random at any age. Like I said, most of these families want to adopt white babies. Not black babies, toddlers, children, or teenagers. Which make up the majority of orphans.
also "wanting to adopt" doesnt mean "can afford to adopt" or "qualifies to adopt"
"When a couple seeking to adopt a white baby is charged $35,000 and a couple seeking a black baby is charged $4,000"
http://abcnews.go.com/US/story?id=91834&page=1
"Both straight and gay adoptive parents are likely to exhibit racial and sex-based biases when applying to adopt a child"
https://economix.blogs.nytimes.com/2010/01/25/black-babies-boys-less-likely-to-be-adopted/
"There are 107,918 foster children eligible for and waiting to be adopted. In 2014, 50,644 foster kidswere adopted — a number that has stayed roughly consistent for the past five years. The average age of a waiting child is 7.7 years old and 29% of them will spend at least three years in foster care."
http://www.goodhousekeeping.com/life/parenting/a35860/adoption-statistics/
I mean, I might want a puppy because it may be nice to have a puppy, but that doesnt mean I'd go out and actually get a puppy.
also to reply to
@Bingo a lot of times the people who end up getting an abortion are people who lack the ability to think ahead or knowledge about contraception etc. Growing up we were never taught anything about contraceptives and we were only taught that all sex (even if you use birth control. they didnt even mention condoms) led to pregnancy, and that teenagers shouldnt have sex. they didnt go further than that. It was basically "dont have sex until you're an adult".
religion also played a role, where it was insanely frowned upon to use contraceptives (because that meant you were having sex) and if you werent married, you were condemned, ostracized, and even excommunicated by your family. which would also happen if you got an abortion too, but! an abortion you can hide.. a baby you cant.
not to mention, a lot of these people lack access to the internet, lack the ability to understand how to use the internet, and just dont understand things. I'd beg to say a lot of them have learning disabilities or mental issues as well. They're usually extremely impulsive and a lot /do/ intend on getting pregnant in the beginning but change their minds or their situation changes. Imagine just turning off your entire thinking area of your brain and just reacting on animalistic urges impulsively.