| 1952 | 2763 | 1785 | 627 | 231 | |
| 1957 | 3178 | 334 | 1723 | 529 | 347 |
| 1962 | 6130 | 1287 | 1019 | 114 | 980 |
| 1965 | 4546 | 1456 | 1665 | 454 | 199 |
| 1975 | 245 | 186 | |||
| 1978 | 10 934 | 10 708 | 9 | 860 | 248 |
| 1980 | 21 604 | 3616 | 476 | 2124 | 162 |
| 1985 | 87 331 | 46 871 | 17 004 | 4888 | 1424 |
| 1986 | 110 371 | 41 310 | 16 950 | 4676 | 1388 |
| 1987 | 120 191 | 39 017 | 27 603 | 4703 | 1605 |
| 1988 | 112 776 | 35 645 | 40 838 | 3786 | 3000 |
| 1989 | 101 339 | 28 569 | 37 232 | 3329 | 1753 |
| 1990 | 93 018 | 29 649 | 35 440 | 2950 | 1593 |
| 1991 | 88 128 | 29 679 | 32 537 | 2900 | 2069 |
| 1992 | 94 164 | 33 439 | 25 692 | 6540 | 3 611 |
| 1993 | 106 771 | 42 145 | 28 214 | 10 742 | 5128 |
| 1994 | 127 935 | 50 864 | 28 047 | 19 071 | 4230 |
| 1995 | 145 443 | 51 053 | 31 877 | 20 381 | 5750 |
| 1996 | 163 322 | 59 398 | 39 652 | 20 905 | 6570 |
| 1997 | 176 353 | 63 749 | 46 539 | 22 410 | 7130 |
| 1998 | 198 885 | 72 508 | 47 077 | 17 622 | 7379 |
| 1999 | 233 513 | 92 225 | 54 670 | 23 749 | 7748 |
| 2000 | 301 239 | 128 484 | 58 767 | 38 989 | 9121 |
| 2001 | 393 256 | 165 197 | 67 809 | 83 973 | 12 243 |
| 2002 | 500 980 | 202 611 | 80 841 | 125 179 | 17 945 |
| 2003 | 651 000 | 269 000 | 111 000 | ||