Name the 20 years for 1600 kwh/kw p y is 8.8
CREATE TABLE "cost_per_kilowatt_hour_us_cents_k_wh" (
  "20_years" text,
  "2400_k_wh_k_w_p_y" text,
  "2200_k_wh_k_w_p_y" text,
  "2000_k_wh_k_w_p_y" text,
  "1800_k_wh_k_w_p_y" text,
  "1600_k_wh_k_w_p_y" text,
  "1400_k_wh_k_w_p_y" text,
  "1200_k_wh_k_w_p_y" text,
  "1000_k_wh_k_w_p_y" text,
  "800_k_wh_k_w_p_y" text
);
SELECT "20_years" FROM "cost_per_kilowatt_hour_us_cents_k_wh" WHERE "1600_k_wh_k_w_p_y"='8.8';