Exact population: 38,415,284 (July 2011 est.) Literacy: Total population: 99.8%; male: 99.8%; female: 99.7% Ethnicities: Polish 96.7%, German 0.4%, Belarusian 0.1%, Ukrainian 0.1%, other and unspecified 2.7% (2002 census) Land boundaries: Total: 2,788 km; border countries: Belarus 407 km, Czech Republic 658 km, Germany 456 km, Lithuania 91 km, Russia (Kaliningrad Oblast) 206 km, Slovakia 444 km, Ukraine 526 km Terrain: Mostly flat plain; mountains along southern border Extremes: Lowest point: near Raczki Elblaskie -2 m; highest point: Rysy 2,499 m Imports: Germany 24.4%, Italy 7.9%, Russia 7.3%, France 6.7%, China 4.6% (2004) Exports: Germany 30%, Italy 6.1%, France 6%, UK 5.4%, Czech Republic 4.3%, Netherlands 4.3% (2004) Industries: Machine building, iron and steel, coal mining, chemicals, shipbuilding, food processing, glass, beverages, textiles