Instead of simulating 1000 Z values, just to take the ones corresponding to 5% and 1% you can use the formula to convert to standard normal: z=(x−μ)/σ The z-value corresponding to the 5th percentile in a normal distribution with a mean (μμ) of 2.82% and a standard deviation (σσ) of 8.03%, is approximately -10.37635%.
If you have the monthly VaR then multiply by the square root of 12. If you have daily, multiply by the square root of the number of trading days (about 250).