Mostrar tabla de datos
| 1981 | 19,1% | 1997 | 14,2% | 2013 | 16,9% |
| 1982 | 17,1% | 1998 | 13,2% | 2014 | 16,6% |
| 1983 | 17,6% | 1999 | 14,2% | 2015 | 14,9% |
| 1984 | 18,6% | 2000 | 13,4% | 2016 | 14,4% |
| 1985 | 17,7% | 2001 | 17,7% | 2017 | 14,2% |
| 1986 | 15,1% | 2002 | 16,4% | 2018 | 14,9% |
| 1987 | 14,6% | 2003 | 17,1% | 2019 | 14,3% |
| 1988 | 14,6% | 2004 | 17,6% | 2020 | 12,4% |
| 1989 | 14% | 2005 | 17,9% | 2021 | 13,7% |
| 1990 | 16,8% | 2006 | 18,9% | 2022 | 15% |
| 1991 | 15,6% | 2007 | 17,8% | 2023 | 15% |
| 1992 | 15,3% | 2008 | 19,4% | 2024 | 14,6% |
| 1993 | 13,5% | 2009 | 15,4% | 2025 | 13,3% |
| 1994 | 13,5% | 2010 | 15,6% | 2026 | 13,8% |
| 1995 | 12,5% | 2011 | 17% | | |
| 1996 | 12,5% | 2012 | 17,2% | | |
Mostrar tabla de datos
| 1981 | 12,83 bill. | 1997 | 107,81 bill. | 2013 | 1,61 mil bill. |
| 1982 | 12,35 bill. | 1998 | 152,26 bill. | 2014 | 1,75 mil bill. |
| 1983 | 15,89 bill. | 1999 | 188,43 bill. | 2015 | 1,71 mil bill. |
| 1984 | 19,31 bill. | 2000 | 203,05 bill. | 2016 | 1,78 mil bill. |
| 1985 | 19,84 bill. | 2001 | 317,75 bill. | 2017 | 1,93 mil bill. |
| 1986 | 17,95 bill. | 2002 | 324,03 bill. | 2018 | 2,21 mil bill. |
| 1987 | 21,04 bill. | 2003 | 374,49 bill. | 2019 | 2,26 mil bill. |
| 1988 | 24,06 bill. | 2004 | 438,8 bill. | 2020 | 1,91 mil bill. |
| 1989 | 27,61 bill. | 2005 | 538,89 bill. | 2021 | 2,33 mil bill. |
| 1990 | 38,96 bill. | 2006 | 685,24 bill. | 2022 | 2,93 mil bill. |
| 1991 | 42,71 bill. | 2007 | 764,12 bill. | 2023 | 3,13 mil bill. |
| 1992 | 47,41 bill. | 2008 | 1,05 mil bill. | 2024 | 3,23 mil bill. |
| 1993 | 53,81 bill. | 2009 | 924,69 bill. | 2025 | 3,16 mil bill. |
| 1994 | 62,48 bill. | 2010 | 1,07 mil bill. | 2026 | 3,56 mil bill. |
| 1995 | 68,91 bill. | 2011 | 1,33 mil bill. | | |
| 1996 | 80,24 bill. | 2012 | 1,49 mil bill. | | |
Mostrar tabla de datos
| 1993 | 14,1% | 2005 | 17,4% | 2017 | 16,4% |
| 1994 | 13,5% | 2006 | 18,4% | 2018 | 16,6% |
| 1995 | 11,9% | 2007 | 18,7% | 2019 | 16,4% |
| 1996 | 11,5% | 2008 | 19,4% | 2020 | 18,4% |
| 1997 | 15,3% | 2009 | 17% | 2021 | 18,1% |
| 1998 | 15,1% | 2010 | 16,9% | 2022 | 17,3% |
| 1999 | 15,1% | 2011 | 17,7% | 2023 | 16,6% |
| 2000 | 15,3% | 2012 | 18,8% | 2024 | 16,9% |
| 2001 | 19,5% | 2013 | 18,8% | 2025 | 16,2% |
| 2002 | 16,9% | 2014 | 18,4% | 2026 | 16,8% |
| 2003 | 18,2% | 2015 | 17,6% | | |
| 2004 | 17,8% | 2016 | 16,9% | | |
Mostrar tabla de datos
| 1993 | 56,16 bill. | 2005 | 524,96 bill. | 2017 | 2,23 mil bill. |
| 1994 | 62,46 bill. | 2006 | 668,86 bill. | 2018 | 2,46 mil bill. |
| 1995 | 65,39 bill. | 2007 | 805,06 bill. | 2019 | 2,59 mil bill. |
| 1996 | 74,05 bill. | 2008 | 1,05 mil bill. | 2020 | 2,85 mil bill. |
| 1997 | 115,66 bill. | 2009 | 1,02 mil bill. | 2021 | 3,08 mil bill. |
| 1998 | 174,13 bill. | 2010 | 1,16 mil bill. | 2022 | 3,38 mil bill. |
| 1999 | 201,18 bill. | 2011 | 1,39 mil bill. | 2023 | 3,48 mil bill. |
| 2000 | 231,31 bill. | 2012 | 1,62 mil bill. | 2024 | 3,73 mil bill. |
| 2001 | 349,32 bill. | 2013 | 1,8 mil bill. | 2025 | 3,86 mil bill. |
| 2002 | 335,44 bill. | 2014 | 1,94 mil bill. | 2026 | 4,32 mil bill. |
| 2003 | 398,08 bill. | 2015 | 2,03 mil bill. | | |
| 2004 | 445,3 bill. | 2016 | 2,1 mil bill. | | |