Tabela de dados
| 1988 | 2,5% | 2001 | 17% | 2014 | 9% |
| 1989 | 5% | 2002 | 13,3% | 2015 | 18,8% |
| 1990 | 7,7% | 2003 | 12,3% | 2016 | 21,2% |
| 1991 | 8,4% | 2004 | 13,6% | 2017 | 20,2% |
| 1992 | 7,3% | 2005 | 12,1% | 2018 | 19% |
| 1993 | 10,9% | 2006 | 12,9% | 2019 | 18,5% |
| 1994 | 12,3% | 2007 | 11,1% | 2020 | 21% |
| 1995 | 12,3% | 2008 | 13,9% | 2021 | 17,3% |
| 1996 | 11% | 2009 | 10,3% | 2022 | 16,2% |
| 1997 | 10,7% | 2010 | 9,4% | 2023 | 11,3% |
| 1998 | 9,8% | 2011 | 8,8% | 2024 | 8,9% |
| 1999 | 11,8% | 2012 | 8,1% | 2025 | 8% |
| 2000 | 12,7% | 2013 | 8,9% | 2026 | 7,7% |
Tabela de dados
| 1988 | 1 mi | 2001 | 21 mi | 2014 | 20 mi |
| 1989 | 2 mi | 2002 | 18 mi | 2015 | 48 mi |
| 1990 | 4 mi | 2003 | 18 mi | 2016 | 59 mi |
| 1991 | 4 mi | 2004 | 19 mi | 2017 | 59 mi |
| 1992 | 6 mi | 2005 | 18 mi | 2018 | 59 mi |
| 1993 | 9 mi | 2006 | 19 mi | 2019 | 58 mi |
| 1994 | 11 mi | 2007 | 18 mi | 2020 | 67 mi |
| 1995 | 11 mi | 2008 | 24 mi | 2021 | 66 mi |
| 1996 | 11 mi | 2009 | 18 mi | 2022 | 64 mi |
| 1997 | 12 mi | 2010 | 17 mi | 2023 | 50 mi |
| 1998 | 12 mi | 2011 | 17 mi | 2024 | 46 mi |
| 1999 | 14 mi | 2012 | 16 mi | 2025 | 43 mi |
| 2000 | 16 mi | 2013 | 19 mi | 2026 | 44 mi |