15-22  国家铁路货车平均静载重
						单位: 吨/车
年    份	合       计	#   煤	# 石    油	# 钢    铁	# 矿 物 性	# 粮    食
					建筑材料
1978	46.9	50.6	46.3	47.5	49.9	50.3
1980	48.0	52.5	46.3	49.0	52.6	54.2
1985	51.6	55.7	46.2	51.9	55.3	54.6
1990	55.0	58.5	47.0	55.0	57.9	58.3
1991	55.2	58.7	46.7	55.6	58.0	58.5
1992	55.8	59.1	47.1	56.4	58.3	58.9
1993	56.1	59.3	47.4	57.1	58.5	59.1
1994	56.6	59.6	47.6	57.8	59.0	59.3
1995	56.8	59.9	47.6	58.2	59.2	59.4
1996	57.1	60.0	47.5	58.5	59.4	59.6
1997	57.3	60.2	48.0	58.6	59.4	59.6
1998	57.6	60.8	48.6	58.9	59.7	59.7
1999	57.7	61.1	49.2	59.1	59.9	59.6
2000	57.9	61.1	49.8	58.9	59.7	59.7
2001	58.1	61.1	50.2	58.8	59.8	59.6