What is the success rate of an EB-5 visa to the USA? Are the projects safe enough to invest in?

USCIS hasn’t shared the success rate of EB-5 Visas in a while. But based on past data from USCIS, the success rate of approval of I-526 petitions (The 1st step of the EB-5 process where in the investor gets a conditional green card after 526 approval) is around 80%. After 22 months of receiving the conditional Green card, the EB-5 petitioner can apply for an I-829 (permanent green card). The success rate of this was around 95% in the past.