How can we insert current year automatically in a YEAR type column of MySQL table?

It can be done by using either CURDATE() or NOW() in MySQL query as follows −

mysql> Insert into year1(Year_Copyright) values (CURDATE());
Query OK, 1 row affected, 1 warning (0.06 sec)

mysql> Select * from year1;
+----------------+
| Year_Copyright |
+----------------+
|           2017 |
|           2017 |
+----------------+
2 rows in set (0.00 sec)

mysql> Insert into year1(Year_Copyright) values (NOW());
Query OK, 1 row affected, 1 warning (0.06 sec)

mysql> Select * from year1;
+----------------+
| Year_Copyright |
+----------------+
|           2017 |
|           2017 |
|           2017 |
+----------------+
1 rows in set (0.00 sec)