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:
| Value | Dimensions | Main Color | Obverse | Reverse | Watermark | Date of issue |
| --- | --- | --- | --- | --- | --- | --- |
| ₩10 | 136 × 65mm | Brown-orange | Factory worker, Chollima (1000 Ri horse) | Western sea barrage and locks at Taedong Gang | Chollima statue | 1992, 1998 |
| ₩50 | 146 × 70mm | Orange | Young professionals, Juche Tower | Mount Paekdu | Juche Tower | 1992 |
| ₩100 | 156 × 75mm | Red and brown | Kim Il-sung | The birthplace of Kim Il-sung , Mangyongdae-guyok | Arch of Triumph | 1992 |
| ₩200 | 140 × 72mm | Blue and green | Siebolds-Magnolia (National Flower of Korea) | Value | Chollima statue | 2005 |
| ₩500 | 156 × 75mm | Dark green | Kumsusan Memorial Palace | Chongnyu bridge | Arch of Triumph | 1998 |
| ₩1000 | 156 × 75mm | Green-cyan | Kim Il-sung | The birthplace of Kim Il-sung , Mangyongdae-guyok | Arch of Triumph | 2002 |
Question:
How many different dates of issue are the for the coin with kumsusan memorial palace on the obverse?
Answer:
1.0