Something which I refer to but getting data in one place is tough.
Ref: https://data.worldbank.org/indicator/PA.NUS.PPPC.RF?end=2017&locations=IN&start=1990&view=chart
Ref: https://data.worldbank.org/indicator/PA.NUS.PPPC.RF?end=2017&locations=IN&start=1990&view=chart
| LOCATION | INDICATOR | MEASURE | TIME | Value | PPP | Ratio | 1/x |
| IND | EXCH | NATUSD | 2000 | 44.94 | 10.14 | 4.43 | 0.23 |
| IND | EXCH | NATUSD | 2001 | 47.19 | 10.23 | 4.61 | 0.22 |
| IND | EXCH | NATUSD | 2002 | 48.61 | 10.45 | 4.65 | 0.21 |
| IND | EXCH | NATUSD | 2003 | 46.58 | 10.64 | 4.38 | 0.23 |
| IND | EXCH | NATUSD | 2004 | 45.32 | 10.95 | 4.14 | 0.24 |
| IND | EXCH | NATUSD | 2005 | 44.10 | 11.06 | 3.99 | 0.25 |
| IND | EXCH | NATUSD | 2006 | 45.31 | 11.42 | 3.97 | 0.25 |
| IND | EXCH | NATUSD | 2007 | 41.35 | 11.76 | 3.52 | 0.28 |
| IND | EXCH | NATUSD | 2008 | 43.51 | 12.54 | 3.47 | 0.29 |
| IND | EXCH | NATUSD | 2009 | 48.41 | 13.20 | 3.67 | 0.27 |
| IND | EXCH | NATUSD | 2010 | 45.73 | 14.21 | 3.22 | 0.31 |
| IND | EXCH | NATUSD | 2011 | 46.67 | 15.11 | 3.09 | 0.32 |
| IND | EXCH | NATUSD | 2012 | 53.44 | 16.01 | 3.34 | 0.30 |
| IND | EXCH | NATUSD | 2013 | 58.60 | 16.73 | 3.50 | 0.29 |
| IND | EXCH | NATUSD | 2014 | 61.03 | 16.99 | 3.59 | 0.28 |
| IND | EXCH | NATUSD | 2015 | 64.15 | 17.15 | 3.74 | 0.27 |
| IND | EXCH | NATUSD | 2016 | 67.20 | 17.52 | 3.83 | 0.26 |
| IND | EXCH | NATUSD | 2017 | 65.12 | 17.73 | 3.67 | 0.27 |
| IND | EXCH | NATUSD | 2018 | 68.40 | 18.88 | 3.62 | 0.28 |
