Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Ecclesiastical Jurisdictions | Latin name | Type | Rite | Ecclesiastical Province | Established | Area (km2) |
| --- | --- | --- | --- | --- | --- | --- |
| Baní | Baniensis | Diocese | Roman | Santo Domingo | 8 November 1986 | 2,892 |
| Barahona | Barahonensis | Diocese | Roman | Santo Domingo | 24 April 1976 | 6,973 |
| Dominican Republic | Reipublicae Dominicanae | Military Ordinariate | Roman | Immediately subject to the Holy See | 23 January 1958 | — |
| La Vega | Vegensis | Diocese | Roman | Santiago de los Caballeros | 25 September 1953 | 4,919 |
| Mao-Monte Cristi | Maoënsis–Montis Christi | Diocese | Roman | Santiago de los Caballeros | 16 January 1978 | 4,841 |
| Nuestra Señora de la Altagracia en Higüey | Higueyensis / a Domina Nostra vulgo de la Altagracia in Higüey | Diocese | Roman | Santo Domingo | 1 April 1959 | 5,437 |
| Puerto Plata | Portus Argentarii | Diocese | Roman | Santiago de los Caballeros | 16 December 1996 | 2,700 |
| San Francisco de Macorís | Sancti Francisci de Macoris | Diocese | Roman | Santiago de los Caballeros | 16 January 1978 | 3,682 |
| San Juan de la Maguana | Sancti Ioannis Maguanensis | Diocese | Roman | Santo Domingo | 25 September 1953 | 7,476 |
| San Pedro de Macorís | Sancti Petri de Macoris | Diocese | Roman | Santo Domingo | 1 February 1997 | 2,588 |
| Santiago de los Caballeros | Sancti Iacobi Equitum | Metropolitan Archdiocese | Roman | Santiago de los Caballeros | 25 September 1953 | 6,391 |
| Santo Domingo | Sancti Dominici | Metropolitan Archdiocese | Roman | Santo Domingo | 8 August 1511 | 4,033 |
Question:
how many dioceses were established before 1978?
Answer:
7