데이터 표
| 1980 | 22% | 1996 | 37.8% | 2012 | 47.9% |
| 1981 | 21% | 1997 | 38.8% | 2013 | 48.9% |
| 1982 | 23.2% | 1998 | 40.2% | 2014 | 47.2% |
| 1983 | 24.1% | 1999 | 42% | 2015 | 48.8% |
| 1984 | 24.8% | 2000 | 43.9% | 2016 | 50.6% |
| 1985 | 24.7% | 2001 | 41.8% | 2017 | 49.6% |
| 1986 | 25.2% | 2002 | 40.9% | 2018 | 49.3% |
| 1987 | 25.9% | 2003 | 39.8% | 2019 | 47.5% |
| 1988 | 24.2% | 2004 | 39.8% | 2020 | 48.9% |
| 1989 | 22.9% | 2005 | 40.3% | 2021 | 49% |
| 1990 | 25.2% | 2006 | 39.8% | 2022 | 50.5% |
| 1991 | 25.6% | 2007 | 41% | 2023 | 48.2% |
| 1992 | 26.3% | 2008 | 41.2% | 2024 | 49.5% |
| 1993 | 27.2% | 2009 | 39.4% | 2025 | 50.9% |
| 1994 | 28.4% | 2010 | 41.7% | 2026 | 50.9% |
| 1995 | 36.8% | 2011 | 44.6% | | |
데이터 표
| 1980 | 15.4억 | 1996 | 380억 | 2012 | 891억 |
| 1981 | 17.6억 | 1997 | 432억 | 2013 | 871억 |
| 1982 | 24.5억 | 1998 | 487억 | 2014 | 831억 |
| 1983 | 30.3억 | 1999 | 540억 | 2015 | 856억 |
| 1984 | 38.8억 | 2000 | 598억 | 2016 | 882억 |
| 1985 | 47.2억 | 2001 | 617억 | 2017 | 880억 |
| 1986 | 57.5억 | 2002 | 650억 | 2018 | 891억 |
| 1987 | 66.8억 | 2003 | 693억 | 2019 | 880억 |
| 1988 | 75.8억 | 2004 | 751억 | 2020 | 820억 |
| 1989 | 85.2억 | 2005 | 784억 | 2021 | 904억 |
| 1990 | 113억 | 2006 | 853억 | 2022 | 1,046억 |
| 1991 | 142억 | 2007 | 939억 | 2023 | 1,082억 |
| 1992 | 168억 | 2008 | 984억 | 2024 | 1,171억 |
| 1993 | 196억 | 2009 | 923억 | 2025 | 1,265억 |
| 1994 | 233억 | 2010 | 931억 | 2026 | 1,328억 |
| 1995 | 338억 | 2011 | 907억 | | |
데이터 표
| 1980 | 24.5% | 1996 | 46.1% | 2012 | 54.9% |
| 1981 | 28.1% | 1997 | 45.1% | 2013 | 53% |
| 1982 | 28.7% | 1998 | 46.7% | 2014 | 51.5% |
| 1983 | 30.2% | 1999 | 48% | 2015 | 51.9% |
| 1984 | 32% | 2000 | 48.2% | 2016 | 50.3% |
| 1985 | 34.2% | 2001 | 47.5% | 2017 | 48.5% |
| 1986 | 33.8% | 2002 | 47.1% | 2018 | 48.6% |
| 1987 | 34% | 2003 | 47.9% | 2019 | 47.6% |
| 1988 | 33.8% | 2004 | 48.8% | 2020 | 59.3% |
| 1989 | 34.8% | 2005 | 46.6% | 2021 | 56.7% |
| 1990 | 38.5% | 2006 | 45.9% | 2022 | 53.1% |
| 1991 | 35.2% | 2007 | 47.8% | 2023 | 49.6% |
| 1992 | 36.9% | 2008 | 51.5% | 2024 | 48.2% |
| 1993 | 38.6% | 2009 | 54.8% | 2025 | 49.7% |
| 1994 | 36.9% | 2010 | 53.1% | 2026 | 50.3% |
| 1995 | 46.6% | 2011 | 55.1% | | |
데이터 표
| 1980 | 17.2억 | 1996 | 465억 | 2012 | 1,020억 |
| 1981 | 23.6억 | 1997 | 501억 | 2013 | 944억 |
| 1982 | 30.3억 | 1998 | 566억 | 2014 | 907억 |
| 1983 | 38.1억 | 1999 | 617억 | 2015 | 909억 |
| 1984 | 50.1억 | 2000 | 656억 | 2016 | 877억 |
| 1985 | 65.4억 | 2001 | 700억 | 2017 | 861억 |
| 1986 | 77.1억 | 2002 | 749억 | 2018 | 877억 |
| 1987 | 87.6억 | 2003 | 834억 | 2019 | 881억 |
| 1988 | 106억 | 2004 | 922억 | 2020 | 993억 |
| 1989 | 129억 | 2005 | 908억 | 2021 | 1,047억 |
| 1990 | 173억 | 2006 | 983억 | 2022 | 1,099억 |
| 1991 | 195억 | 2007 | 1,095억 | 2023 | 1,115억 |
| 1992 | 237억 | 2008 | 1,230억 | 2024 | 1,142억 |
| 1993 | 279억 | 2009 | 1,285억 | 2025 | 1,233억 |
| 1994 | 302억 | 2010 | 1,187억 | 2026 | 1,313억 |
| 1995 | 428억 | 2011 | 1,121억 | | |