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:
SkyTrain rolling stock
Table title:
Summary
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Builder </th><th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Year acquired </th><th colspan=1 rowspan=1 > Fleet size </th></tr>
<tr> <td colspan=1 rowspan=1 > Urban Transportation Development Corporation </td><td class="highlighted"  colspan=1 rowspan=1 > ICTS Mark I </td><td class="highlighted"  colspan=1 rowspan=1 > 1984–1986 </td><td class="highlighted"  colspan=1 rowspan=1 > 114 cars: 001 to 056; 061 to 118 </td></tr>
<tr> <td colspan=1 rowspan=1 > Urban Transportation Development Corporation </td><td class="highlighted"  colspan=1 rowspan=1 > ICTS Mark I </td><td class="highlighted"  colspan=1 rowspan=1 > 1990–1991 </td><td class="highlighted"  colspan=1 rowspan=1 > 16 cars: 121 to 136 </td></tr>
<tr> <td colspan=1 rowspan=1 > Urban Transportation Development Corporation </td><td class="highlighted"  colspan=1 rowspan=1 > ICTS Mark I </td><td class="highlighted"  colspan=1 rowspan=1 > 1994–1995 </td><td class="highlighted"  colspan=1 rowspan=1 > 20 cars: 137 to 156 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bombardier Transportation </td><td colspan=1 rowspan=1 > ART Mark II </td><td colspan=1 rowspan=1 > 2000–2002 </td><td colspan=1 rowspan=1 > 60 cars: 201 to 260 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bombardier Transportation </td><td colspan=1 rowspan=1 > ART Mark II </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > 34 cars: 301 to 334 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bombardier Transportation </td><td colspan=1 rowspan=1 > ART Mark II </td><td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > 14 cars: 335 to 348 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bombardier Transportation </td><td colspan=1 rowspan=1 > Innovia Metro Mark III </td><td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > 28 cars: 401 to 428 </td></tr>
<tr> <td colspan=1 rowspan=1 > Bombardier Transportation </td><td colspan=1 rowspan=1 > Innovia Metro Mark III </td><td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > 28 cars </td></tr>
<tr> <td colspan=1 rowspan=1 > Hyundai Rotem </td><td colspan=1 rowspan=1 > EMU </td><td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > 40 cars: 101 to 120; 201 to 220 </td></tr>
</table>
Question:
How many 150 Mark I cars does SkyTrain rolling stock have and when were they added?
Answer:
SkyTrain rolling stock has a total of 150 Mark I cars: 114 dating from 1984–1986, 16 added in 1991 and 20 added in 1994.