Hundred self-referential at-most statements

A page lists $100$ claims. Claim number $n$ (for $n=1,\dots,100$) reads: "No more than $n-1$ of the claims on this page are true." How many of the claims are true?

$50$. If exactly $T$ claims are true, claim $n$ is true precisely when $T\le n-1$, which holds for $n=T+1,\dots,100$, i.e. $100-T$ claims. Consistency needs $100-T=T$, so $T=50$.