<Tr> <Th> GDP growth </Th> <Td> 4.5% (Q1 2018) </Td> </Tr> <Tr> <Th> GDP per capita </Th> <Td> $19,818 Nominal (2017) $35,223 PPP (2017) </Td> </Tr> <Tr> <Th> GDP per capita rank </Th> <Td> 37th (nominal); 36th (PPP) </Td> </Tr> <Tr> <Th> GDP by sector </Th> <Td> <Ul> <Li> Agriculture: 2.5% </Li> <Li> Industry: 37.8% </Li> <Li> Services: 59.7% (2017) </Li> </Ul> </Td> </Tr>

What is the main export of czech republic