transportation -- balloons |
1953: 17
1954: 58, 90, 232 |
transportation -- balloons --- ascensions | 1953: 187 |
transportation -- balloons --- flight |
1957: 253
1973: 181*, 186+* |
transportation -- balloons --- landing | 1986: 238 |
transportation -- balloons --- racing | 1985: 228+ |