主要统计指标解释
可比价格 指计算各种总量指标所采用的扣除了价格变动因素的价格，可进行不同时期总量指标的对比。按可比价格计算总量指标有两种方法：一种是直接用产品产量乘某一年的不变价格计算；另一种是用价格指数进行缩减。
不变价格 指以同类产品某年的平均价格作为固定价格，用于计算各年的产品价值。按不变价格计算的产品价值消除了价格变动因素，不同时期对比可以反映生产的发展速度。新中国成立后，随着工农业产品价格水平的变化，国家统计局先后五次制定了全国统一的工业产品不变价格和农业产品不变价格。从1952年到1957年使用1952年工(农)业产品不变价格，从1957年到1970年使用1957年不变价格，从1971年到1980年使用1970年不变价格，从1981年到1990年使用1980年不变价格，从1991年开始使用1990年不变价格。
平均增长速度 我国计算平均增长速度有两种方法：一种是习惯上经常使用的“水平法”，又称几何平均法，是以间隔期最后一年的水平同基期水平对比来计算平均每年增长(或下降)速度；另一种是“累计法”，又称代数平均法或方程法，是以间隔期内各年水平的总和同基期水平对比来计算平均每年增长(或下降)速度。在一般正常情况下，两种方法计算的平均每年增长速度比较接近；但在经济发展不平衡、出现大起大落时，两种方法计算的结果差别较大。
本《年鉴》内所列的平均增长速度，均用“水平法”计算。从某年到某年平均增长速度的年份，均不包括基期年在内。
国民经济行业分类 自2003年定期报表开始使用新的《国民经济行业分类》（GB/T4754-2002），该分类是由国家统计局组织修订，经国家质量监督检验检疫总局批准，于2002年5月10日发布实施。这次修订是在1994年分类标准的基础上，参照联合国《全部经济活动的国际标准产业分类》（ISIC/Rev.3）进行的。修订后的《国民经济行业分类》（GB/T4754-2002）共有门类20个，大类95个，中类396个，小类913个。新增门类4个，大类增加3个，中类增加28个，小类增加67个。
企业(单位)登记注册类型 是以在工商行政管理机关登记注册的各类企业为划分对象，以工商行政管理部门对企业登记注册的类型为依据，将企业登记注册类型分为内资企业、港澳台商投资企业和外商投资企业三大类。内资企业包括国有企业、集体企业、股份合作企业、联营企业、有限责任公司、股份有限公司、私营公司和其他企业；港澳台商投资企业和外商投资企业分别包括合资经营企业、合作经营企业、独资经营企业和股份有限公司。对不在工商行政管理部门进行登记注册的行政机关、事业单位和社会团体，主要按其经费来源和管理方式进行划分。
Explanatory Notes on Main Statistical Indicators
Comparable Prices refer to prices that are used to remove the factors of price change in calculating economic aggregates, so as to facilitate comparison of aggregates over time. Two methods are used for calculating economic aggregates at comparable prices: 1. Multiplying the output of products by their constant prices of certain year; 2. Deflation of data at current prices by relevant price index.
Constant Price refers to the average price of a given product in certain year, which is used, for comparison of output value over time. As the output value at constant prices removes the factor of price changes, it reflects the trend of production development over time. Since 1949, with the changes in general price level, National Bureau of Statistics has issued nationally unified constant prices five times: the 1952 constant prices for 1952-1957; the 1957 constant prices for 1957-1970; the 1970 constant prices for 1971-1980; the 1980 constant prices for 1981-1990; and the 1990 constant prices have been used since 1991.
Annual Average Growth Rate two methods for calculating annual average growth rate are applied in China, one is often called "level approach" or the method of calculating geometric average, which is derived by comparing the level of the last year of the interval with that of the beginning year; the other is called "accumulative approach" or algebraic average or equation method, which is derived by the summation of the actual figure of each year in the interval divided by the figure in the base year. Usually the results calculated by the two methods are fairly close, but they differed sharply when uneven economic development occurred with striking fluctuations in growth.
The average annual growth rates listed in this statistical yearbook are calculated by level approach. The base years are not listed when the years are listed for average annual growth rates.
Industrial Classification of the National Economy The new Industrial Classification of the National Economy (GB/T 4754-2002) is introduced starting from the compilation of 2003 annual statistics. The new revision was based on the 1994 classification and organized by the National Bureau of Statistics taking into consideration of the International Standards of the Industrial Classification of All Economic Activities (ISIC/Rev.3) of the United Nations, and the new Classification was promulgated by the National Administration of Quality Supervision, Inspection and Quarantine on May 10, 2002. The revised version of the Industrial Classification of the National Economy (GB/T 4754-2002) is composed of 20 major divisions, 95 divisions, 396 major groups and 913 groups, including 4 new major divisions, 3 new divisions, 28 major groups and 67 groups.
Registration Status of Enterprises Enterprises are classified into 3 categories, namely domestic-funded enterprises, enterprises with investment from Hong Kong, Macau and Taiwan, and enterprises with foreign investment, in the light of the registration status of an enterprise in industrial and commercial administration agencies. Domestic-funded enterprises include state-owned enterprises, collective-owned enterprises, cooperative enterprises, joint ownership enterprises, limited liability corporations, share-holding corporations Ltd., private enterprises and other enterprises. Included in the enterprises with investment from Hong Kong, Macau and Taiwan and enterprises with foreign investment are joint-venture enterprises, cooperative enterprises, sole investment enterprises and share-holding corporations Ltd. For government agencies, institutions and social organizations which are not requested to be registered in industrial and commercial administration agencies, they are classified mainly by their sources of funds and way of management.