<Table> Military aid given to North Vietnam by the People's Republic of China <Tr> <Th> Year </Th> <Th> Guns </Th> <Th> Artillery pieces </Th> <Th> Bullets </Th> <Th> Artillery shells </Th> <Th> Radio trans - mitters </Th> <Th> Telephones </Th> <Th> Tanks </Th> <Th> Planes </Th> <Th> Auto - mobiles </Th> </Tr> <Tr> <Th> 1964 </Th> <Td> 80,500 </Td> <Td> 1,205 </Td> <Td> 25,240,000 </Td> <Td> 335,000 </Td> <Td> 426 </Td> <Td> 2,941 </Td> <Td> 16 </Td> <Td> 18 </Td> <Td> 25 </Td> </Tr> <Tr> <Th> 1965 </Th> <Td> 220,767 </Td> <Td> 4,439 </Td> <Td> 114,010,000 </Td> <Td> 1,800,000 </Td> <Td> 2,779 </Td> <Td> 9,502 </Td> <Td>? </Td> <Td> </Td> <Td> 114 </Td> </Tr> <Tr> <Th> 1966 </Th> <Td> 141,531 </Td> <Td> 3,362 </Td> <Td> 178,120,000 </Td> <Td> 1,066,000 </Td> <Td> 1,568 </Td> <Td> 2,235 </Td> <Td>? </Td> <Td>? </Td> <Td> 96 </Td> </Tr> <Tr> <Th> 1967 </Th> <Td> 146,600 </Td> <Td> 3,984 </Td> <Td> 147,000,000 </Td> <Td> 1,363,000 </Td> <Td> 2,464 </Td> <Td> 2,289 </Td> <Td> 26 </Td> <Td> 70 </Td> <Td> 435 </Td> </Tr> <Tr> <Th> 1968 </Th> <Td> 219,899 </Td> <Td> 7,087 </Td> <Td> 247,920,000 </Td> <Td> 2,082,000 </Td> <Td> 1,854 </Td> <Td> 3,313 </Td> <Td> 18 </Td> <Td>? </Td> <Td> 454 </Td> </Tr> <Tr> <Th> 1969 </Th> <Td> 139,900 </Td> <Td> 3,906 </Td> <Td> 119,117,000 </Td> <Td> 1,357,000 </Td> <Td> 2,210 </Td> <Td> 3,453 </Td> <Td>? </Td> <Td>? </Td> <Td> 162 </Td> </Tr> <Tr> <Th> 1970 </Th> <Td> 101,800 </Td> <Td> 2,212 </Td> <Td> 29,010,000 </Td> <Td> 397,000 </Td> <Td> 950 </Td> <Td> 1,600 </Td> <Td>? </Td> <Td>? </Td> <Td>? </Td> </Tr> <Tr> <Th> 1971 </Th> <Td> 143,100 </Td> <Td> 7,898 </Td> <Td> 57,190,000 </Td> <Td> 1,899,000 </Td> <Td> 2,464 </Td> <Td> 4,424 </Td> <Td> 80 </Td> <Td> </Td> <Td> 4,011 </Td> </Tr> <Tr> <Th> 1972 </Th> <Td> 189,000 </Td> <Td> 9,238 </Td> <Td> 40,000,000 </Td> <Td> 2,210,000 </Td> <Td> 4,370 </Td> <Td> 5,905 </Td> <Td> 220 </Td> <Td> 14 </Td> <Td> 8,758 </Td> </Tr> <Tr> <Th> 1973 </Th> <Td> 233,500 </Td> <Td> 9,912 </Td> <Td> 40,000,000 </Td> <Td> 2,210,000 </Td> <Td> 4,335 </Td> <Td> 6,447 </Td> <Td> 120 </Td> <Td> 36 </Td> <Td> 1,210 </Td> </Tr> <Tr> <Th> </Th> <Td> 164,500 </Td> <Td> 6,406 </Td> <Td> 30,000,000 </Td> <Td> 1,390,000 </Td> <Td> 5,148 </Td> <Td> 4,663 </Td> <Td> 80 </Td> <Td>? </Td> <Td> 506 </Td> </Tr> <Tr> <Th> </Th> <Td> 141,800 </Td> <Td> 4,880 </Td> <Td> 20,600,000 </Td> <Td> 965,000 </Td> <Td> 2,240 </Td> <Td> 2,150 </Td> <Td>? </Td> <Td> 20 </Td> <Td>? </Td> </Tr> <Tr> <Th> Total </Th> <Td> 1,922,897 </Td> <Td> 64,529 </Td> <Td> 1,048,207,000 </Td> <Td> 17,074,000 </Td> <Td> 30,808 </Td> <Td> 48,922 </Td> <Td> 560 </Td> <Td> 164 </Td> <Td> 15,771 </Td> </Tr> </Table> <Tr> <Th> Year </Th> <Th> Guns </Th> <Th> Artillery pieces </Th> <Th> Bullets </Th> <Th> Artillery shells </Th> <Th> Radio trans - mitters </Th> <Th> Telephones </Th> <Th> Tanks </Th> <Th> Planes </Th> <Th> Auto - mobiles </Th> </Tr> <Tr> <Th> 1964 </Th> <Td> 80,500 </Td> <Td> 1,205 </Td> <Td> 25,240,000 </Td> <Td> 335,000 </Td> <Td> 426 </Td> <Td> 2,941 </Td> <Td> 16 </Td> <Td> 18 </Td> <Td> 25 </Td> </Tr> <Tr> <Th> 1965 </Th> <Td> 220,767 </Td> <Td> 4,439 </Td> <Td> 114,010,000 </Td> <Td> 1,800,000 </Td> <Td> 2,779 </Td> <Td> 9,502 </Td> <Td>? </Td> <Td> </Td> <Td> 114 </Td> </Tr>

When did the vietnam war start for the united states