1991

1991: 17 113 companies

1月 63 companies

2月 280 companies

3月 948 companies

4月 1 125 companies

5月 1 591 companies

6月 1 321 companies

7月 1 372 companies

8月 1 293 companies

9月 2 059 companies

10月 2 330 companies

11月 2 370 companies

12月 2 361 companies