Show the number of new countries visited each year in parentheses next to the total country count.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Change label from "Flight CO₂" to "Total CO₂" for accuracy
- Add CO₂ breakdown by transport type (flight/train/ferry)
- Show values in kg for <1000kg, tonnes for ≥1000kg
- Track CO₂ emissions by transport type in stats calculation
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
