Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is 2003 when 1999 is 2.1?

### Inputs:
table_name: table, columns: ['Greek national account', '1970', '1980', '1990', '1995', '1996', '1997', '1998', '1999', '2000', '2001 1', '2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '2010', '2011', '2012', '2013 2', '2014 2', '2015 3']

### Response:
SELECT 2003 FROM table WHERE 1999 = 2.1