SSDI backpay question

I currently I'm awaiting a court date for a SSDI hearing. But I have a question about backpay. I'm 23, I originally became disabled in 2007. I dont know why my foster parents never put my on disability but yeah. I finally got help getting a lawyer and started the process.

My question is, does my back pay go from when I initially applied. Which was in 2024. Or would in go back to 2007 when I was originally injured and permanently disabled?