Nemecio Martinez-Ledesma (Martinez) pleaded guilty to illegal reentry after removal. See 8 U.S.C. § 1326. He now appeals his within-guidelines sentence of 37 months. Martinez contends that his sentence was greater than necessary to satisfy the sentencing goals set forth in 18 U.S.C. § 3553(a) and was therefore unreasonable. Specifically, Martinez argues that the guidelines range was too severe because United States Sentencing Guideline § 2L1.2 was not empirically based and gave excessive weight to his criminal history and to prior convictions more than 15 years old. He also argues that the guidelines range failed to account for his age and the decrease in recidivism that accompanies aging. He contends that the presumption of reasonableness applicable to within-guidelines sentences should not be applied in this case.

*502 “A discretionary sentence imposed within a properly calculated guidelines range is presumptively reasonable.” United States v. Campos-Maldonado, 531 F.3d 337, 338 (5th Cir.), cert. denied, -U.S.-, 129 S.Ct. 328, 172 L.Ed.2d 236 (2008). Because Martinez did not object in the district court to the reasonableness of his sentence, review is for plain error. See United States v. Whitelaw, 580 F.3d 256, 259-60 (5th Cir. 2009).

This court has consistently rejected Martinez’s “empirical data” argument. See United States v. Duarte, 569 F.3d 528, 529-30 (5th Cir.), cert. denied, — U.S. -, 130 S.Ct. 378, 175 L.Ed.2d 231 (2009). The district court considered Martinez’s request for a downward variance, and it ultimately determined that a sentence at the bottom of the applicable guidelines range was appropriate based on the circumstances of the case and the § 3553(a) factors. Martinez’s assertions regarding § 2L1.2’s lack of an empirical basis, the age of his last conviction, the nonviolent nature of his offense, and his age are insufficient to rebut the presumption of reasonableness. See Campos-Maldonado, 531 F.3d at 338. As Martinez has not demonstrated that the district court’s imposition of a sentence at the bottom of the guidelines range was plain error, the district court’s judgment is AFFIRMED.