Fiscal year	1989 (Heisei 1)	1990 (Heisei 2)	1991 (Heisei 3)	1992 (Heisei 4)
Production volume	20,000	110,000	200,000	252,876

Fiscal year	1993 (Heisei 5)	1994 (Heisei 6)	1995 (Heisei 7)	1996 (Heisei 8)
Production volume	278,531	256,825	261,807	324,727

Fiscal year	1997 (Heisei 9)	1998 (Heisei 10)	1999 (Heisei 11)	2000 (Heisei 12)
Production volume	369,305	615,908	742,546	951,007

Fiscal year	2001 (Heisei 13)	2002 (Heisei 14)	2003 (Heisei 15)	2004 (Heisei 16)
Production volume	1,181,438	1,788,561	1,739,876	2,035,574

Fiscal year	2005 (Heisei 17)	2006 (Heisei 18)	2007 (Heisei 19)	2008 (Heisei 20)
Production volume	1,990,712	2,149,966	2,258,490	2,233,812

Fiscal year	2009 (Heisei 21)	2010 (Heisei 22)	2011 (Heisei 23)	2012 (Heisei 24)
Production volume	1,987,177	1,826,538	1,927,206	2,032,923

Fiscal year	2013 (Heisei 25)	2014 (Heisei 26)	2015 (Heisei 27)	2016 (Heisei 28)
Production volume	1,945,597	2,092,865	2,091,786	2,077,541

Fiscal year	2017 (Heisei 29)	2018 (Heisei 30)	2019 (Reiwa 1)	2020 (Reiwa 2)
Production volume	2,070,103	2,141,297	2,059,209	1,673,042

Fiscal year	2021 (Reiwa 3)	2022 (Reiwa 4)	2023 (Reiwa 5)
Production volume	1,602,780	1,665,774	1,697,809