Year	Percent
1950	13.10807
1955	13.6328
1960	12.46247
1965	15.48569
1970	14.0307
1975	12.03049
1980	8.16014
1985	7.77387
1990	8.46789
1995	7.4316
2000	6.75761
2005	5.9184
2010	5.35784
2015	5.49116
2020	5.23503
2025	5.0256
2030	4.75889
2035	4.53606
2040	4.42822
2045	4.43566
2050	4.47083
2055	4.46912
2060	4.43588
2065	4.41247
2070	4.41702
2075	4.45104
2080	4.487
2085	4.50053
2090	4.49078
2095	4.45842
2100	4.43286