Year	Percent
1950	14.72417
1955	13.95897
1960	8.66312
1965	14.9435
1970	11.96389
1975	14.647
1980	13.44265
1985	8.85586
1990	9.3173
1995	8.82623
2000	8.89784
2005	8.25321
2010	7.69721
2015	6.86634
2020	6.58706
2025	6.55223
2030	6.46344
2035	6.22683
2040	5.88432
2045	5.5832
2050	5.44896
2055	5.46589
2060	5.48398
2065	5.41119
2070	5.26099
2075	5.12155
2080	5.04944
2085	5.05072
2090	5.06674
2095	5.04363
2100	4.9774