I can tell my experience. Not just me but everyone I know moved from poverty to lower-middle or middle class in just 20 years. When I was 5 years old, we were living in a village with no electricity. Having 2 square meals was a luxury only some house holds had. Many farmers & daily wage workers had only enough to eat one meal a day. My family's biggest fear while I was growing up was what will happen if my father felt sick and couldn't work. I am thankful those days are behind us.