?D?y??w?}????g?b?v >>?@?}?????w?w?n?k?l?x?i?z?????j>>?@?P?W??

?@?}?????@?w?w?n?k?l?x?i?z?????j

?P?W???i2002.3?j ?@
??@??
?\???@
?Q?y?[?W?@
UCSD??}???????@?_?c?p?l?i?O????w???p??w??????j
?R?y?[?W?@
???????????E??E???E??E??F?w?j???[???[?N???炷?????????x?i?x??N?@???j
???????????E??E???E??E??F?w?A?????J??v??_?x?i??R?S?i?@???j
???????????E??E???E??E??F?w?`???[?^?[?E?X?N?[???\?A?????J???????????????^???x?i?L?Y?T?@???j
STOCK&?b?n?k?k?d?b?s?h?n?m?F???Z?b?e?B?w?j???????????x
?S?y?[?W?@
???W?F?}????p????i???j
?T?y?[?W?@
???W?F?}????p????i?E?j
?U?y?[?W?@
?????????a?n?n?j?r?F?w?l???????P?x?i?????h?q?@???j
?????????a?n?n?j?r?F?w?A?????J??遂?????x?i??????a?@???j
?V?y?[?W?@
????{????i?P?V?j?F?w?V????x?i?D?J?????Y?@???j
???t?@?????X??M?FSourceOECD?????p??\??I
?W?y?[?W?@
???????F?????F?????????????????????
?w?O????p??
??W??L

?D?y??w?}????g?b?v >>?@?}?????w?w?n?k?l?x?i?z?????j>>?@?P?W??