SELECT MAX(annual_co2_emissions__in_thousands_of_metric_tons_) FROM table_2508175_1 WHERE gdp_per_emissions__in_us_dollars_per_ton_ = 3903
Ketika PDB per emisi (dalam dolar AS per ton) adalah 3903, berapakah emisi CO2 tahunan maksimum (dalam ribuan metrik ton)?
CREATE TABLE table_2508175_1 (annual_co2_emissions__in_thousands_of_metric_tons_ INTEGER, gdp_per_emissions__in_us_dollars_per_ton_ VARCHAR)