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:
| Period | Live births per year | Deaths per year | Natural change per year | CBR* | CDR* | NC* | TFR* | IMR* | Life expectancy total | Life expectancy males | Life expectancy females |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1950-1955 | 10 000 | 3 000 | 7 000 | 48.0 | 14.9 | 33.1 | 6.56 | 89.0 | 56.0 | 54.4 | 57.7 |
| 1955-1960 | 12 000 | 3 000 | 9 000 | 46.0 | 12.4 | 33.6 | 6.56 | 76.0 | 58.7 | 57.0 | 60.5 |
| 1960-1965 | 14 000 | 3 000 | 11 000 | 44.8 | 10.6 | 34.2 | 6.56 | 64.0 | 60.5 | 58.7 | 62.5 |
| 1965-1970 | 14 000 | 3 000 | 11 000 | 39.7 | 9.0 | 30.6 | 5.95 | 55.0 | 62.4 | 60.5 | 64.5 |
| 1970-1975 | 13 000 | 3 000 | 10 000 | 34.9 | 8.3 | 26.6 | 5.29 | 49.0 | 64.0 | 61.7 | 66.5 |
| 1975-1980 | 11 000 | 3 000 | 8 000 | 30.2 | 7.4 | 22.8 | 4.20 | 44.0 | 65.1 | 62.8 | 67.7 |
| 1980-1985 | 11 000 | 3 000 | 8 000 | 30.0 | 7.3 | 22.7 | 3.70 | 42.0 | 66.5 | 63.6 | 69.8 |
| 1985-1990 | 10 000 | 3 000 | 7 000 | 25.4 | 7.2 | 18.2 | 3.00 | 39.0 | 67.1 | 64.0 | 70.7 |
| 1990-1995 | 9 000 | 3 000 | 6 000 | 22.5 | 7.1 | 15.4 | 2.60 | 34.0 | 67.6 | 64.4 | 71.1 |
| 1995-2000 | 11 000 | 3 000 | 8 000 | 23.6 | 7.4 | 16.2 | 2.80 | 29.0 | 67.8 | 64.6 | 71.4 |
| 2000-2005 | 10 000 | 4 000 | 6 000 | 21.0 | 7.6 | 13.4 | 2.60 | 24.0 | 68.1 | 64.8 | 71.7 |
Question:
What period was there a 22.7 NC?
Answer:
1980-1985