it's not true 1-3% people develop symptoms (genital wart) if they are infected by your low risk HPV strain. It's actually 1-3% of the population.
SO let's say there are 320 millions of people in US, 1% means about 3 millions of them show symtomps of genital warts.
While 50-80% of sexually active people may have HPV, and let's say there are only about 120 millions of people in US there are sexually active at the same year, so about 60-90 millions of them have HPV. (that's including all type of HPV)
so actually if you are infected by low risk HPV, your chance to show symtomps maybe up to 25-50%, it's totally vary from person to person, so there's no exact science on this.
It's also not 100% clear whether we can still infect others or not if we have been clear for more than 6-8 months since the latest wart outbreak so i would stick with safer sex (condom) even though I know that still doesn't offer 100% protection but double protection is always good - first making sure you are at least 8 months wart-free and second make sure you always use condom unless you want to have a kid. Better to tell your partner from the start that you have HPV and he/she might want to take gardasyl in case he/she isnt sexually active for a long time
I don't know about the stats. I hate HPV stats and try not to get too tied up in them. How long have you been wart free? The docs say that if you've gone six months without and outbreak then there is a very high chance that you have supressed it and are no longer contagious. That's all I'd go by. If you haven't had outbreaks in six months or more then consider the HPV dormant. Also recognize that this is very common.