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:
| Name | Status | Population | District | Former local authority |
| --- | --- | --- | --- | --- |
| Cronton | Civil parish | 1,379 | Knowsley | Whiston\nRural District |
| Halewood | Town | 20,309 | Knowsley | Whiston\nRural District |
| Huyton with Roby | Unparished area | 49,859 | Knowsley | Huyton with Roby\nUrban District |
| Kirkby | Unparished area | 40,374 | Knowsley | Kirkby\nUrban District |
| Knowsley | Civil parish | 11,343 | Knowsley | Whiston\nRural District |
| Prescot | Town | 11,184 | Knowsley | Prescot\nUrban District |
| Tarbock | Civil parish | 2,382 | Knowsley | Whiston\nRural District |
| Whiston | Town | 13,629 | Knowsley | Whiston\nRural District |
| Liverpool | Unparished area | 439,473 | Liverpool | Liverpool\nCounty Borough |
| Aintree Village | Civil parish | 7,126 | Sefton | West Lancashire\nRural District |
| Bootle | Unparished area | 59,011 | Sefton | Bootle\nCounty Borough |
| Crosby | Unparished area | 45,872 | Sefton | Crosby\nMunicipal Borough |
| Formby | Civil parish | 23,586 | Sefton | Formby\nUrban District |
| Hightown | Civil parish | 2,247 | Sefton | Crosby\nMunicipal Borough |
| Ince Blundell | Civil parish | 518 | Sefton | West Lancashire\nRural District |
| Litherland | Unparished area | 18,629 | Sefton | Litherland\nUrban District |
| Little Altcar | Civil parish | 892 | Sefton | West Lancashire\nRural District |
| Lydiate | Civil parish | 6,672 | Sefton | West Lancashire\nRural District |
| Maghull | Town | 22,225 | Sefton | West Lancashire\nRural District |
| Melling | Civil parish | 2,810 | Sefton | West Lancashire\nRural District |
| Sefton | Civil parish | 772 | Sefton | West Lancashire\nRural District |
| Southport | Unparished area | 90,336 | Sefton | Southport\nCounty Borough |
| Thornton | Civil parish | 2,262 | Sefton | West Lancashire\nRural District |
| Billinge Chapel End | Civil parish | 6,554 | St Helens | Billinge and Winstanley\nUrban District |
| Bold | Civil parish | 2,283 | St Helens | Whiston\nRural District |
| Eccleston | Civil parish | 10,528 | St Helens | Whiston\nRural District |
| Haydock | Unparished area | 15,684 | St Helens | Haydock\nUrban District |
| Newton le Willows | Unparished area | 21,418 | St Helens | Newton le Willows\nUrban District |
| Rainford | Civil parish | 8,344 | St Helens | Rainford\nUrban District |
| Rainhill | Civil parish | 11,913 | St Helens | Whiston\nRural District |
| Seneley Green | Civil parish | 6,163 | St Helens | Ashton in Makerfield\nUrban District |
| St Helens | Unparished area | 91,414 | St Helens | St Helens\nCounty Borough |
| Windle | Civil parish | 2,542 | St Helens | Whiston\nRural District |
| Bebington | Unparished area | 58,226 | Wirral | Bebington\nMunicipal Borough |
| Birkenhead | Unparished area | 103,206 | Wirral | Birkenhead\nCounty Borough |
| Heswall | Unparished area | 29,977 | Wirral | Wirral\nUrban District |
| Hoylake | Unparished area | 35,655 | Wirral | Hoylake\nUrban District |
| Wallasey | Unparished area | 84,348 | Wirral | Wallasey\nCounty Borough |
Question:
how many areas are unparished areas?
Answer:
15