原油和天然气

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年份	天然气生产量与消费量的比率（天然气自给率，%)
1980	101.49
1981	102.33
1982	100.25
1983	100.66
1984	98.49
1985	100.00
1986	100.00
1987	100.00
1988	99.30
1989	100.13
1990	100.33
1991	101.13
1992	99.43
1993	100.06
1994	101.27
1995	101.18
1996	108.76
1997	116.17
1998	114.91
1999	117.26
2000	111.02
2001	110.57
2002	111.93
2003	103.27
2004	104.51
2005	105.81
2006	102.13
2007	98.18
2008	98.78
2009	95.25
2010	88.68
2011	78.55
2012	73.89
2013	70.87
2014	69.58
2015	69.68
2016	65.86
2017	61.85
2018	56.85
2019	57.58
2020	59.73
2021	57.13
2022	61.49