Figure 1a shows the percentage market share of broadband internet providers in Spain in 2023 based on the number of active subscriptions.

| Provider | Percentage Market Share |
|---|---|
| Orange | 24% |
| Digi | 4% |
| Movistar | 38% |
| Others | 2% |
| MásMóvil | 14% |
| Vodafone | 18% |
Using the data in Figure 1a, calculate the combined market share of the four largest broadband providers.