Let $X$ be a random variable representing the number of items inspected until the first defective item is found. If the probability of an item being defective is $p = 0.05$, and $X$ follows a Geometric distribution $P(X=k) = (1-p)^{k-1}p$ for $k=1, 2, \dots$, what is the probability that the first defective item is found on or after the 5th inspection?