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Năm	Thứ hạng	Số lượng
1945	#19	529
1946	#20	592
1947	#21	515
1948	#24	469
1949	#18	516
1950	#21	471
1951	#21	445
1952	#23	460
1953	#23	460
1954	#25	459
1955	#26	426
1956	#29	392
1957	#25	439
1958	#28	427
1959	#35	393
1960	#35	383
1961	#25	479
1962	#29	447
1963	#32	425
1964	#34	442
1965	#31	472
1966	#36	424
1967	#31	441
1968	#36	417
1969	#44	375
1970	#34	391
1971	#53	326
1972	#42	351
1973	#44	313
1974	#48	304
1975	#46	264
1976	#51	236
1977	#41	255
1978	#42	274
1979	#38	285
1980	#44	275
1981	#53	234
1982	#56	221
1983	#54	227
1984	#55	220
1985	#74	187
1986	#77	184
1987	#62	220
1988	#69	214
1989	#83	204
1990	#81	201
1991	#79	198
1992	#98	171
1993	#106	157
1994	#132	122
1995	#85	175
1996	#97	149
1997	#92	163
1998	#88	164
1999	#104	136
2000	#88	164
2001	#109	128
2002	#120	120
2003	#139	102
2004	#148	98
2005	#198	73
2006	#158	94
2007	#183	79
2008	#147	103
2009	#201	77
2010	#195	79
2011	#206	72
2012	#220	65
2013	#223	61
2014	#223	58
2015	#209	63
2016	#245	53
2017	#265	47
2018	#220	55
2019	#194	65
2020	#277	35
2021	#190	60
2022	#184	63
2023	#196	63
2024	#182	67
2025	#184	69