Apply suitable Exponential criteria?

Also find 1. inital level

2. Intial trend

3. Intail season

If required ? Also estiamte level trend and season for 4th and 8th time period if applicable to data

Orignal data

POP

1991 112.61

1992 115.54

1993 118.5

1994 121.48

1995 124.49

1996 127.51

1997 130.56

1998 132.35

1999 136.4

2000 139.55

2001 142.76

2002 146.02

2003 149.32

2004 152.66

2005 156.04

2006 159.46

2007 162.91

2008 166.41

2009 169.94

2010 173.1

2011 177.1

2012 180.71

2013 184.35

2014 188.02

2015 191.71