
| Reserves | Production | Consumption | Trade | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | — | — | — | 0 | — | — | — | 115,430 | −7.5% | 102 | < 0.01% | 25.88 | 117,464 | 454.2 | 117,010 |
| 2023 | 0 | — | — | 0 | — | — | — | 124,755 | −22.1% | 103 | < 0.01% | 28.13 | 157,159 | 268.8 | 156,890 |
| 2022 | 0 | — | — | 0 | — | — | — | 160,136 | +4.3% | 100 | < 0.01% | 36.43 | 185,411 | 0.08 | 185,411 |
| 2021 | 0 | — | — | 0 | — | — | — | 153,496 | +11.9% | 101 | < 0.01% | 35.26 | 153,496 | 0 | 153,496 |
| 2020 | 0 | — | — | 0 | — | — | — | 137,221 | +0.85% | 101 | < 0.01% | 31.76 | 138,685 | 0 | 138,685 |
| 2019 | 0 | — | — | 0 | — | — | — | 136,063 | −7.5% | 102 | < 0.01% | 31.73 | 139,370 | 0 | 139,370 |
| 2018 | 0 | — | — | 0 | — | — | — | 147,162 | −23.7% | 102 | < 0.01% | 34.56 | 138,009 | 0 | 138,009 |
| 2017 | 0 | — | — | 0 | — | — | — | 192,904 | −3.3% | 95 | < 0.01% | 45.64 | 192,312 | 0 | 192,312 |
| 2016 | 0 | — | — | 0 | — | — | — | 199,518 | −12.6% | 95 | < 0.01% | 47.65 | 199,394 | 0 | 199,394 |
| 2015 | 0 | — | — | 0 | — | — | — | 228,178 | +18.8% | 94 | < 0.01% | 55.09 | 229,333 | 0 | 229,333 |
| 2014 | 0 | — | — | 0 | — | — | — | 192,064 | −11.6% | 97 | < 0.01% | 46.9 | 192,064 | 0 | 192,064 |
| 2013 | 0 | — | — | 0 | — | — | — | 217,155 | +3.7% | 95 | < 0.01% | 53.68 | 229,912 | 0 | 229,912 |
| 2012 | 0 | — | — | 0 | — | — | — | 209,439 | +10.6% | 95 | < 0.01% | 52.37 | 213,848 | 0 | 213,848 |
| 2011 | 0 | — | — | 0 | — | — | — | 189,434 | −12.8% | 91 | < 0.01% | 47.87 | 189,434 | 0 | 189,434 |
| 2010 | 0 | — | — | 0 | — | — | — | 217,358 | −11.6% | 85 | < 0.01% | 55.55 | 217,358 | 0 | 217,358 |
| 2009 | 0 | — | — | 0 | — | — | — | 245,815 | −6.3% | 81 | < 0.01% | 63.54 | 274,476 | 0 | 274,476 |
| 2008 | 0 | — | — | 0 | — | — | — | 262,350 | −11.2% | 79 | < 0.01% | 68.66 | 261,248 | 0 | 261,248 |
| 2007 | — | — | — | 0 | — | — | — | 295,419 | +17.5% | 76 | < 0.01% | 78.3 | 343,921 | 0 | 343,921 |
| 2006 | — | — | — | 0 | — | — | — | 251,327 | +4.6% | 77 | < 0.01% | 67.21 | 267,862 | 0 | 267,862 |
| 2005 | — | — | — | 0 | — | — | — | 240,304 | +19.8% | 75 | < 0.01% | 64.67 | 240,304 | 0 | 240,304 |
| 2004 | — | — | — | 0 | — | — | — | 200,620 | −1.6% | 78 | < 0.01% | 54.34 | 199,518 | 0 | 199,518 |
| 2003 | — | — | — | 0 | — | — | — | 203,927 | +7.6% | 77 | < 0.01% | 55.62 | 203,927 | 0 | 203,927 |
| 2002 | — | — | — | 0 | — | — | — | 189,597 | −13.1% | 76 | < 0.01% | 52.1 | 189,597 | 0 | 189,597 |
| 2001 | — | — | — | 0 | — | — | — | 218,257 | +10.6% | 75 | < 0.01% | 60.41 | 188,495 | 0 | 188,495 |
| 2000 | — | — | — | 0 | — | — | — | 197,313 | +53% | 73 | < 0.01% | 54.93 | 197,313 | 0 | 197,313 |
| 1999 | — | — | — | 0 | — | — | — | 128,970 | +2.6% | 79 | < 0.01% | 36.11 | 128,970 | 0 | 128,970 |
| 1998 | — | — | — | 0 | — | — | — | 125,663 | −18.6% | 80 | < 0.01% | 35.35 | 125,663 | 0 | 125,663 |
| 1997 | — | — | — | 0 | — | — | — | 154,323 | −26.3% | 77 | < 0.01% | 43.54 | 154,323 | 0 | 154,323 |
| 1996 | — | — | — | 0 | — | — | — | 209,439 | −24.9% | 70 | < 0.01% | 59.23 | 209,439 | 0 | 209,439 |
| 1995 | — | — | — | 0 | — | — | — | 278,884 | +7.7% | 67 | 0.01% | 79.22 | 243,611 | 0 | 243,611 |
| 1994 | — | — | — | 0 | — | — | — | 259,043 | +3.5% | 71 | 0.01% | 74.08 | 259,043 | 0 | 259,043 |
| 1993 | — | — | — | 0 | — | — | — | 250,224 | −17.8% | 71 | 0.01% | 72.13 | 250,224 | 0 | 250,224 |
| 1992 | — | — | — | 0 | — | — | — | 304,238 | −32.8% | 67 | 0.01% | 88.5 | 304,238 | 0 | 304,238 |
| 1991 | — | — | — | 0 | — | — | — | 453,049 | −16.8% | 53 | 0.01% | 133.3 | 413,367 | 0 | 413,367 |
| 1990 | — | — | — | 0 | — | — | — | 544,541 | +5.1% | 52 | 0.01% | 162.2 | 540,133 | 0 | 540,133 |
| 1989 | — | — | — | 0 | — | — | — | 518,086 | +3.8% | 53 | 0.01% | 155.9 | 518,086 | 0 | 518,086 |
| 1988 | — | — | — | 0 | — | — | — | 499,346 | −13.1% | 52 | 0.01% | 151.5 | 481,710 | 0 | 481,710 |
| 1987 | — | — | — | 0 | — | — | — | 574,304 | −5.1% | 51 | 0.01% | 175.5 | 577,611 | 0 | 577,611 |
| 1986 | — | — | — | 0 | — | — | — | 605,168 | −14.2% | 50 | 0.01% | 186.1 | 676,819 | 0 | 676,819 |
| 1985 | — | — | — | 0 | — | — | — | 705,478 | −1.2% | 50 | 0.02% | 218 | 518,086 | 0 | 518,086 |
| 1984 | — | — | — | 0 | — | — | — | 714,297 | +42.1% | 49 | 0.02% | 221.7 | 597,453 | 0 | 597,453 |
| 1983 | — | — | — | 0 | — | — | — | 502,653 | −8.6% | 50 | 0.01% | 156.6 | 502,653 | 0 | 502,653 |
| 1982 | — | — | — | 0 | — | — | — | 550,053 | −12% | 49 | 0.01% | 172.1 | 519,189 | 0 | 519,189 |
| 1981 | — | — | — | 0 | — | — | — | 625,010 | +80% | 44 | 0.02% | 196.7 | 625,010 | 0 | 625,010 |
| 1980 | — | — | — | 0 | — | — | — | 347,228 | — | 48 | 0.01% | 109.9 | 632,727 | 0 | 632,727 |