SELECT country FROM table_2508175_1 WHERE annual_co2_emissions__in_thousands_of_metric_tons_ = 1811
Ketika emisi CO2 tahunan (dalam ribuan metrik ton) adalah 1811, apa negara itu?
CREATE TABLE table_2508175_1 (country VARCHAR, annual_co2_emissions__in_thousands_of_metric_tons_ VARCHAR)