Year	Percent
1950	13.97851
1955	14.01429
1960	13.60918
1965	13.26949
1970	13.38358
1975	13.89352
1980	14.76236
1985	15.91665
1990	17.84229
1995	19.85871
2000	23.13915
2005	26.54831
2010	29.83914
2015	31.468
2020	31.57781
2025	30.21984
2030	28.01564
2035	26.57903
2040	25.84354
2045	25.62852
2050	25.68843
2055	25.04627
2060	23.88548
2065	22.99339
2070	22.35589
2075	21.94045
2080	21.96137
2085	22.08272
2090	22.03317
2095	21.85614
2100	21.69991