Actually, it's not. The NCBI found:
The three regions with lowest lifetime intimate partner violence prevalence estimates were central Europe (16%; UI 12–21%), central Asia (18%; 13–24%), and western Europe (20%; 15–26%), although even these rates are still high.
As with the lifetime prevalence of intimate partner violence, the highest prevalence of past year physical or sexual, or both, intimate partner violence among ever-partnered women aged 15–49 years was in the regions of central sub-Saharan Africa (32%; UI 22–43%) and Oceania (29%; 19–40%), followed by eastern sub-Saharan Africa (24%; 19–29%) and south Asia (19%; 12–27%; table 4).
Overall, mostly high-income countries including Australasia (3%; UI 2–5%), western Europe (4%; 3–6%), central Europe (5%; 3–6%), southern Latin America (5%; 3–8%), and North America (6%; 4–9%) had the lowest estimated prevalence rates of past year physical or sexual, or both, intimate partner violence among women aged 15–49 years"