Tabela de dados
| 1985 | 18,9% | 1999 | 22,5% | 2013 | 20,3% |
| 1986 | 19,5% | 2000 | 19,8% | 2014 | 20,3% |
| 1987 | 20,5% | 2001 | 19% | 2015 | 20,9% |
| 1988 | 20,2% | 2002 | 20% | 2016 | 21,1% |
| 1989 | 19,9% | 2003 | 19,3% | 2017 | 20,9% |
| 1990 | 16,8% | 2004 | 19,9% | 2018 | 22% |
| 1991 | 17,5% | 2005 | 19,3% | 2019 | 21,6% |
| 1992 | 17,6% | 2006 | 19,4% | 2020 | 21,6% |
| 1993 | 21,3% | 2007 | 20,6% | 2021 | 21,3% |
| 1994 | 18,7% | 2008 | 21,6% | 2022 | 21,3% |
| 1995 | 18,9% | 2009 | 21,6% | 2023 | 22,1% |
| 1996 | 18,3% | 2010 | 21,5% | 2024 | 22,6% |
| 1997 | 17,9% | 2011 | 21,5% | 2025 | 22,4% |
| 1998 | 20,8% | 2012 | 20,2% | 2026 | 22,2% |
Tabela de dados
| 1985 | 152 mi | 1999 | 561 mi | 2013 | 923 mi |
| 1986 | 183 mi | 2000 | 492 mi | 2014 | 968 mi |
| 1987 | 215 mi | 2001 | 458 mi | 2015 | 1,03 bi |
| 1988 | 242 mi | 2002 | 497 mi | 2016 | 1,08 bi |
| 1989 | 274 mi | 2003 | 525 mi | 2017 | 1,14 bi |
| 1990 | 266 mi | 2004 | 582 mi | 2018 | 1,23 bi |
| 1991 | 298 mi | 2005 | 608 mi | 2019 | 1,22 bi |
| 1992 | 322 mi | 2006 | 672 mi | 2020 | 934 mi |
| 1993 | 398 mi | 2007 | 753 mi | 2021 | 1,14 bi |
| 1994 | 367 mi | 2008 | 829 mi | 2022 | 1,35 bi |
| 1995 | 392 mi | 2009 | 827 mi | 2023 | 1,46 bi |
| 1996 | 391 mi | 2010 | 875 mi | 2024 | 1,58 bi |
| 1997 | 399 mi | 2011 | 915 mi | 2025 | 1,62 bi |
| 1998 | 498 mi | 2012 | 879 mi | 2026 | 1,68 bi |
Tabela de dados
| 1985 | 20,4% | 1999 | 20,9% | 2013 | 24,3% |
| 1986 | 21,1% | 2000 | 20,9% | 2014 | 22,6% |
| 1987 | 19,9% | 2001 | 22% | 2015 | 22,1% |
| 1988 | 18,2% | 2002 | 23% | 2016 | 22,6% |
| 1989 | 19% | 2003 | 22,5% | 2017 | 23% |
| 1990 | 16,5% | 2004 | 22,5% | 2018 | 23,2% |
| 1991 | 18% | 2005 | 25,3% | 2019 | 24,6% |
| 1992 | 18,3% | 2006 | 24,4% | 2020 | 33,1% |
| 1993 | 21,6% | 2007 | 22,2% | 2021 | 26,7% |
| 1994 | 18,7% | 2008 | 22,3% | 2022 | 23,8% |
| 1995 | 19% | 2009 | 24,2% | 2023 | 25,3% |
| 1996 | 18,8% | 2010 | 25,6% | 2024 | 24,4% |
| 1997 | 19% | 2011 | 26,9% | 2025 | 25,2% |
| 1998 | 18,6% | 2012 | 27,1% | 2026 | 25,1% |
Tabela de dados
| 1985 | 164 mi | 1999 | 521 mi | 2013 | 1,1 bi |
| 1986 | 199 mi | 2000 | 521 mi | 2014 | 1,08 bi |
| 1987 | 209 mi | 2001 | 532 mi | 2015 | 1,09 bi |
| 1988 | 218 mi | 2002 | 572 mi | 2016 | 1,16 bi |
| 1989 | 262 mi | 2003 | 611 mi | 2017 | 1,25 bi |
| 1990 | 262 mi | 2004 | 658 mi | 2018 | 1,3 bi |
| 1991 | 305 mi | 2005 | 797 mi | 2019 | 1,39 bi |
| 1992 | 334 mi | 2006 | 846 mi | 2020 | 1,43 bi |
| 1993 | 402 mi | 2007 | 811 mi | 2021 | 1,43 bi |
| 1994 | 367 mi | 2008 | 857 mi | 2022 | 1,51 bi |
| 1995 | 395 mi | 2009 | 928 mi | 2023 | 1,66 bi |
| 1996 | 403 mi | 2010 | 1,04 bi | 2024 | 1,71 bi |
| 1997 | 423 mi | 2011 | 1,14 bi | 2025 | 1,83 bi |
| 1998 | 445 mi | 2012 | 1,18 bi | 2026 | 1,9 bi |