Año	Reservas totales de crudo	Reservas totales de líquidos del gas	Reservas totales de gas seco	Reservas totales de hidrocarburos	Producción de hidrocarburos	Relación reservas/producción (años)
1990	45,250	6,733	14,467	66,450	1,258	53
1991	44,560	6,738	14,202	65,500	1,268	52
1992	44,292	6,633	14,075	65,000	1,310	50
1993	44,439	6,786	13,825	65,050	1,304	50
1994	44,043	6,733	13,740	64,516	1,316	49
1995	43,127	6,648	13,445	63,220	1,320	48
1996	42,146	6,650	13,262	62,058	1,293	48
1997	42,072	6,400	12,428	60,900	1,413	43
1998	39,016	6,007	11,482	56,505	1,450	39
1999	41,064	5,875	10,802	57,741	1,492	39
2000	41,495	6,036	10,673	58,204	1,434	41
2001	39,918	5,574	10,662	56,154	1,469	38
2002	38,286	4,927	9,738	52,951	1,494	35
2003	36,266	4,384	9,382	50,032	1,508	33
2004	34,389	4,229	9,423	48,041	1,587	30
2005	33,312	4,248	9,354	46,914	1,611	29
2006	33,093	4,342	8,982	46,418	1,604	29
2007	31,909	4,359	9,109	45,376	1,618	28
2008	31,212	4,454	8,817	44,483	1,601	28
2009	30,930	4,053	8,580	43,563	1,451	30
2010	30,497	3,980	8,597	43,075	1,384	31
2011	30,560	3,867	8,647	43,074	1,358	32
2012	30,613	4,321	8,904	43,837	1,353	32