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:
| Election year | # of\nconstituency votes | % of\nconstituency votes | +/– | # of\nparty list votes | % of\nparty list votes | +/– | # of\noverall seats won |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1965 | 587,216 | 1.8 | 1.8 | 664,193 | 2.0 | 2.0 | 0 / 518 |
| 1969 | 1,189,375 | 3.6 | 1.8 | 1,422,010 | 4.3 | 2.3 | 0 / 518 |
| 1972 | 194,389 | 0.5 | 3.1 | 207,465 | 0.6 | 3.7 | 0 / 518 |
| 1976 | 136.023 | 0.4 | 0.1 | 122,661 | 0.3 | 0.3 | 0 / 518 |
| 1980 |  |  |  | 68,096 | 0.2 | 0.1 | 0 / 497 |
| 1983 | 57,112 | 0.1 | 0.3 | 91,095 | 0.2 | 0 | 0 / 498 |
| 1987 | 182,880 | 0.5 | 0.4 | 227,054 | 0.6 | 0.4 | 0 / 497 |
| 1990 | 190,105 | 0.4 | 0.1 | 145,776 | 0.3 | 0.3 | 0 / 662 |
| 1998 | 45,043 | 0.1 | 0.3 | 126,571 | 0.3 | 0 | 0 / 669 |
| 2002 | 103,209 | 0.1 | 0.1 | 215,232 | 0.4 | 0.1 | 0 / 603 |
| 2005 | 857.777 | 1.8 | 1.6 | 748,568 | 1.6 | 1.2 | 0 / 614 |
| 2009 | 768,442 | 1.8 | 0 | 635,525 | 1.5 | 0.1 | 0 / 620 |
| 2013 | 634,842 | 1.5 | 0.3 | 560,660 | 1.3 | 0.2 | 0 / 630 |
Question:
in the year ____, no constituency data was available.
Answer:
1980