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	1,434	40
2000	41,495	6,036	10,673	58,204	1,469	40
2001	39,918	5,574	10,662	56,154	1,494	38
2002	38,286	4,927	9,738	52,951	1,508	35
2003	36,266	4,384	9,382	50,032	1,587	32
2004	34,389	4,229	9,423	48,041	1,611	30
2005	33,312	4,248	9,354	46,914	1,604	29
2006	33,093	4,342	8,982	46,418	1,618	29
2007	31,909	4,359	9,109	45,376	1,603	28