Year	Percent
1950	9.88865
1955	9.07098
1960	10.45891
1965	12.83311
1970	10.68679
1975	11.85456
1980	13.12472
1985	11.49853
1990	8.4487
1995	8.4327
2000	10.26564
2005	7.74001
2010	5.96684
2015	5.64205
2020	5.77175
2025	5.94582
2030	5.58903
2035	5.09425
2040	4.78239
2045	4.6694
2050	4.71347
2055	4.80985
2060	4.83132
2065	4.75659
2070	4.66469
2075	4.64174
2080	4.69765
2085	4.78331
2090	4.82538
2095	4.80393
2100	4.75349