Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Women's Nordic Football Championship
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Host </th><th colspan=1 rowspan=1 > Winner </th><th colspan=1 rowspan=1 > Runner-up </th><th colspan=1 rowspan=1 > 3rd Place </th><th colspan=1 rowspan=1 > 4th Place </th></tr>
<tr> <td colspan=1 rowspan=1 > 1974 Details </td><td class="highlighted"  colspan=1 rowspan=1 > Finland </td><td class="highlighted"  colspan=1 rowspan=1 > Denmark </td><td class="highlighted"  colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Only three participants </td></tr>
<tr> <td colspan=1 rowspan=1 > 1975 Details </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Only three participants </td></tr>
<tr> <td colspan=1 rowspan=1 > 1976 Details </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Only three participants </td></tr>
<tr> <td colspan=1 rowspan=1 > 1977 Details </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Only three participants </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1978 Details </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Finland </td><td class="highlighted"  colspan=1 rowspan=1 > Norway </td></tr>
<tr> <td colspan=1 rowspan=1 > 1979 Details </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Norway </td></tr>
<tr> <td colspan=1 rowspan=1 > 1980 Details </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Finland </td></tr>
<tr> <td colspan=1 rowspan=1 > 1981 Details </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Finland </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Norway </td></tr>
<tr> <td colspan=1 rowspan=1 > 1982 Details </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Denmark </td><td colspan=1 rowspan=1 > Sweden </td><td colspan=1 rowspan=1 > Norway </td><td colspan=1 rowspan=1 > Finland </td></tr>
</table>
Question:
Who participated in the Women's Nordic Football Championship?
Answer:
In the Women's Nordic Football Championship, Finland, Denmark and Sweden competed from the start, and Norway joined the tournament in 1978.